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1. The role of structural defects in commercial lithium-ion batteries

Author

Guannan Qian, Federico Monaco, Dechao Meng, Sang-Jun Lee, Guibin Zan, Jizhou Li, Dmitry Karpov, Sheraz Gul, David Vine, Benjamin Stripe, Jin Zhang, Jun-Sik Lee, Zi-Feng Ma, Wenbin Yun, Piero Pianetta, Xiqian Yu, Linsen Li, Peter Cloeten, and Yijin Liu

Subjects
commercial battery, defects, failure analysis, X-ray imaging, synchrotron, Physics, QC1-999
Abstract

Summary: The manufacturing of commercial lithium-ion batteries (LIBs) involves a number of sophisticated production processes. Various cell defects can be induced, and, depending on their structural and chemical characteristics, they could lead to acute failure and/or chronic degradation. Although tremendous efforts have been devoted to develop a robust quality control (QC) procedure, the functional role of the cell defects is not well understood. Here, we address this question through a systematic experimental study of commercial 18650-type LIBs that have failed the QC inspection due to a self-discharging effect. We identify and recover the defective regions from the cell and conduct a comprehensive investigation from the chemical, structural, and morphological perspectives. Our results reveal how the structural defects affect the cell performance, which is highly important to industry-scale battery production.

Published
2021
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2. Ptychographic imaging and micromagnetic modeling of thermal melting of nanoscale magnetic domains in antidot lattices

Author

Joachim Gräfe, Maxim Skripnik, Georg Dieterle, Felix Haering, Markus Weigand, Iuliia Bykova, Nick Träger, Hermann Stoll, Tolek Tyliszczak, David Vine, Paul Ziemann, Ulf Wiedwald, David Shapiro, Ulrich Nowak, Gisela Schütz, and Eberhard J. Goering

Subjects
Physics, QC1-999
Abstract

Antidot lattices are potential candidates to act as bit patterned media for data storage as they are able to trap nanoscale magnetic domains between two adjacent holes. Here, we demonstrate the combination of micromagnetic modeling and x-ray microscopy. Detailed simulation of these systems can only be achieved by micromagnetic modeling that takes thermal effects into account. For this purpose, a Landau–Lifshitz–Bloch approach is used here. The calculated melting of magnetic domains within the antidot lattice is reproduced experimentally by x-ray microscopy. Furthermore, we compare conventional scanning transmission x-ray microscopy with resolution enhanced ptychography. Hence, we achieve a resolution of 13 nm. The results demonstrate that ptychographic imaging can also recover magnetic contrast in the presence of a strong topological variation and is generally applicable toward magnetic samples requiring ultimate resolution.

Published
2020
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3. Unpacking the Invisible Military Backpack

Author

David Vine

Subjects
war, peace, militarism, militarization, social movements, teaching, Theory and practice of education, LB5-3640
Abstract

Educators in the United States have failed in teaching about war. Educators have failed to teach broadly enough, consistently enough, and with the sense of urgency demanded by the immense destruction of the United States’ Post-9/11 Wars. In the spirit of exchanging ideas, strategies, and inspiration, this article offers 56 suggestions for teaching about war. While the suggestions are focused on people teaching about U.S. wars, they can be applied by anyone teaching about war anywhere, at any level, in any field, for any length of time. The article discusses how much of the violence of war is similar to the “invisible knapsack” Peggy McIntosh identifies in her classic article “White Privilege: Unpacking the Invisible Knapsack.” War is not the same as whiteness, but war, militarization, and militarism shape our daily lives in profound but often invisible ways. In this context, educators can help make war visible and contribute to movements to end current wars and stop future ones.

Published
2020
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4. Coupling between oxygen redox and cation migration explains unusual electrochemistry in lithium-rich layered oxides

Author

William E. Gent, Kipil Lim, Yufeng Liang, Qinghao Li, Taylor Barnes, Sung-Jin Ahn, Kevin H. Stone, Mitchell McIntire, Jihyun Hong, Jay Hyok Song, Yiyang Li, Apurva Mehta, Stefano Ermon, Tolek Tyliszczak, David Kilcoyne, David Vine, Jin-Hwan Park, Seok-Kwang Doo, Michael F. Toney, Wanli Yang, David Prendergast, and William C. Chueh

Subjects
Science
Abstract

Lithium ion battery electrodes employing anion redox exhibit high energy densities but suffer from poor cyclability. Here the authors reveal that the voltage of anion redox is strongly affected by structural changes that occur during battery cycling, explaining its unique electrochemical properties.

Published
2017
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5. Physical origins of current and temperature controlled negative differential resistances in NbO2

Author

Suhas Kumar, Ziwen Wang, Noraica Davila, Niru Kumari, Kate J. Norris, Xiaopeng Huang, John Paul Strachan, David Vine, A.L. David Kilcoyne, Yoshio Nishi, and R. Stanley Williams

Subjects
Science
Abstract

The development of future computation devices will be aided by a better understanding of the physics underlying material behaviors. Using thermoreflectance and spatially resolved X-ray microscopy, Kumar et al. elucidate the origin of two types of negative differential resistance in NbO2 memristors.

Published
2017
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6. High Speed X-ray Tomography with Submicron Resolution for FA and Reverse Engineering of Packages, PCBs, and 300 mm Wafers

Author

S.H. Lau, Sheraz Gul, Jeff Gelb, Tianzhu Qin, Guibin Zan, Katie Matusik, David Vine, Sylvia Lewis, and Wenbing Yun

Subjects
Electrical and Electronic Engineering, Safety, Risk, Reliability and Quality
Abstract

This article provides an overview of a commercial 3D X-ray system, explaining how it acquires high-resolution images of submicron defects in large intact samples. It presents examples in which the system is used to reveal cracks in thin redistribution layers, voids in organic substrates, and variations in TSV metallization on 300-mm wafers. As the authors explain, each scan can be done in as little as a few minutes regardless of sample size, and the resulting images are clear of the beam hardening artifacts that often cause problems in failure analysis and reverse engineering.

Published
2022

7. In Situ Visualization of Li-Whisker with Grating-Interferometry-Based Tricontrast X-ray Microtomography

Author

Hongyi Pan, Quan Li, Guannan Qian, Hong Li, Yijin Liu, Sheraz Gul, Xiqian Yu, Guibin Zan, David Vine, Piero Pianetta, Wenbing Yun, Sylvia Jia Yun Lewis, and Jizhou Li

Subjects
Battery (electricity), Materials science, X-ray microtomography, business.industry, General Chemical Engineering, Biomedical Engineering, chemistry.chemical_element, In situ visualization, Chemical state, chemistry, Whisker, Optoelectronics, General Materials Science, Lithium, business, Grating interferometry
Abstract

The lithium-ion battery has demonstrated tremendous economic and social impacts. Upon battery operation under different conditions, lithium changes its chemical state and physical formation, leadin...

Published
2021

8. Submicrometer spectromicroscopy of UO2 aged under high humidity conditions

Author

Alex S. Ditter, Joseph I. Pacold, Zurong Dai, M. Lee Davisson, David Vine, Scott B. Donald, Brandon W. Chung, and David K. Shuh

Subjects
Surfaces and Interfaces, Condensed Matter Physics, Surfaces, Coatings and Films
Abstract

The oxidation of uranium dioxide is a complicated process, depending on factors including humidity, temperature, and microstructure. To further determine the characteristics of this process, UO2 particles were allowed to age and agglomerate under 98% relative humidity at room temperature for 378 days. A focused ion beam (FIB) section of this agglomeration was then measured at the O K-edge, U N5-edge, and C K-edge using the scanning transmission x-ray microscope (STXM) at the Advanced Light Source. O K-edge and U N5-edge x-ray absorption measurements allowed for the elemental and chemical species mapping of the agglomerates and indicated the formation of schoepite at the submicrometer scale in specific locations. Non-negative matrix factorization was employed to elucidate the main components at the O K-edge, which were uranyl (schoepite) formed primarily at the interface of the sample with controlled atmosphere, a UO2-like bulk component present in the majority of the sample, and an oxygen species present at the surface of the FIB section, which is likely adsorbed water. STXM spectromicroscopy measurements at the U N5-edge measurements also confirmed the location of oxidized uranium. This analysis is a valuable insight into the formation of schoepite on UO2 and shows the sensitivity to and utility of STXM spectromicroscopy for uranium speciation.

Published
2022

9. Understanding multi-scale battery degradation with a macro-to-nano zoom through its hierarchy

Author

Jin Zhang, Piero Pianetta, David Vine, Peter Cloetens, Federico Monaco, Sheraz Gul, Guibin Zan, Guannan Qian, Jizhou Li, Wenbing Yun, and Yijin Liu

Subjects
Battery (electricity), Hierarchy (mathematics), Renewable Energy, Sustainability and the Environment, Computer science, business.industry, Scale (chemistry), 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Energy storage, 0104 chemical sciences, Nano, Degradation (geology), General Materials Science, Zoom, Macro, 0210 nano-technology, Process engineering, business
Abstract

Lithium-ion batteries (LIBs) feature structural and chemical complexities across a broad range of length scales. It is the hierarchy of the battery structure that determines its functionality. An in-depth understanding of the battery function, degradation, and failure mechanisms requires a thorough and systematic investigation from structural, chemical, mechanical, and dynamic perspectives. Here we present a macro-to-nano zoom through the hierarchy of a commercial 18650 type LIB using a suite of state-of-the-art X-ray microscopy techniques. Damage, deformation, and heterogeneity at different length scales are visualized and are associated with different degradation phenomena and mechanisms. Our results highlight the importance of the mechanical properties of the cathode material, which could impact both the immediate and the long-term cell behaviors significantly. While this study focuses on a commercial lithium cell with a standard configuration, our findings can be extrapolated and are applicable to the development of next-generation energy storage technology, e.g. solid-state batteries.

Published
2021

11. Defect Characterization of Advanced Packages using Novel Phase and Dark Field X-Ray Imaging

Author

S.H. Lau, Sheraz Gul, Guibin Zan, David Vine, Sylvia Lewis, and Wenbing Yun

Subjects
Electrical and Electronic Engineering, Safety, Risk, Reliability and Quality
Abstract

Modified Talbot X-ray interferometry provides three contrast modes simultaneously: absorption, phase, and dark field/scattering. This article describes the powerful new imaging technique and shows how it is used to characterize various types of defects in advanced semiconductor packages.

Published
2020

12. Ptychopy: GPU framework for ptychographic data analysis

Author

Yi Jiang, David Vine, Ke Yue, Youssef S. G. Nashed, Stefan Vogt, and Junjing Deng

Subjects
Physics - Instrumentation and Detectors, Computer science, business.industry, Image and Video Processing (eess.IV), Process (computing), ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION, FOS: Physical sciences, Image processing, Instrumentation and Detectors (physics.ins-det), Electrical Engineering and Systems Science - Image and Video Processing, Processing, computer.software_genre, Ptychography, Visualization, Software framework, Workflow, Computer graphics (images), Computer data storage, FOS: Electrical engineering, electronic engineering, information engineering, business, computer, computer.programming_language, ComputingMethodologies_COMPUTERGRAPHICS
Abstract

X-ray ptychography imaging at synchrotron facilities like the Advanced Photon Source (APS) involves controlling instrument hardwares to collect a set of diffraction patterns from overlapping coherent illumination spots on extended samples, managing data storage, reconstructing ptychographic images from acquired diffraction patterns, and providing the visualization of results and feedback. In addition to the complicated workflow, ptychography instrument could produce up to several TB's of data per second that is needed to be processed in real time. This brings up the need to develop a high performance, robust and user friendly processing software package for ptychographic data analysis. In this paper we present a software framework which provides functionality of visualization, work flow control, and data reconstruction. To accelerate the computation and large datasets process, the data reconstruction part is implemented with three algorithms, ePIE, DM and LSQML using CUDA-C on GPU., Comment: X-Ray Nanoimaging: Instruments and Methods V

Published
2022
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13. The role of structural defects in commercial lithium-ion batteries

Author

Federico Monaco, Peter Cloeten, Wenbin Yun, Dmitry Karpov, David Vine, Guibin Zan, Jun-Sik Lee, Benjamin Stripe, Jin Zhang, Xiqian Yu, Guannan Qian, Piero Pianetta, Zi-Feng Ma, Sheraz Gul, Dechao Meng, Linsen Li, Yijin Liu, Sang Jun Lee, and Jizhou Li

Subjects
Functional role, Battery (electricity), Materials science, Acute failure, Physics, QC1-999, X-ray imaging, General Engineering, commercial battery, General Physics and Astronomy, chemistry.chemical_element, General Chemistry, failure analysis, General Energy, Lead (geology), chemistry, synchrotron, General Materials Science, Lithium, Biochemical engineering, defects
Abstract

Summary The manufacturing of commercial lithium-ion batteries (LIBs) involves a number of sophisticated production processes. Various cell defects can be induced, and, depending on their structural and chemical characteristics, they could lead to acute failure and/or chronic degradation. Although tremendous efforts have been devoted to develop a robust quality control (QC) procedure, the functional role of the cell defects is not well understood. Here, we address this question through a systematic experimental study of commercial 18650-type LIBs that have failed the QC inspection due to a self-discharging effect. We identify and recover the defective regions from the cell and conduct a comprehensive investigation from the chemical, structural, and morphological perspectives. Our results reveal how the structural defects affect the cell performance, which is highly important to industry-scale battery production.

Published
2021

14. High-resolution multicontrast tomography with an X-ray microarray anode–structured target source

Author

David Vine, Sheraz Gul, Wenbing Yun, Sylvia Jia Yun Lewis, Guibin Zan, Yijin Liu, Jin Zhang, Wei Zhao, and Piero Pianetta

Subjects
Data Analysis, Materials science, Talbot–Lau grating interferometry, High resolution, Grating, 01 natural sciences, 030218 nuclear medicine & medical imaging, 010309 optics, X-ray source, 03 medical and health sciences, Biological specimen, 0302 clinical medicine, Optics, Imaging, Three-Dimensional, phase-contrast tomography, 0103 physical sciences, Animals, Absorption (electromagnetic radiation), Electrodes, Lighting, microarray anode–structured target, Multidisciplinary, business.industry, X-ray, Fishes, Anode, Interferometry, Applied Physical Sciences, Physical Sciences, Tomography, business, Tomography, X-Ray Computed, Tooth
Abstract

Significance Talbot–Lau interferometry (TLI) holds remarkable potential for multicontrast X-ray imaging but suffers from technical challenges associated with microfabrication and limited efficiency. We tackle the frontier challenges in this field by developing a microarray anode–structured target source with a built-in structured illumination scheme. Our development facilitates high-resolution and high-sensitivity TLI imaging without the absorption source grating. We demonstrate the tri-contrast tomography capability with a Drum fish tooth specimen and separate the biological features with different combinations of physical properties. Our approach not only addresses the long-standing challenges in the field of X-ray TLI phase-contrast imaging but also features a compact setup that can potentially be made broadly available to academia research and industrial applications., Multicontrast X-ray imaging with high resolution and sensitivity using Talbot–Lau interferometry (TLI) offers unique imaging capabilities that are important to a wide range of applications, including the study of morphological features with different physical properties in biological specimens. The conventional X-ray TLI approach relies on an absorption grating to create an array of micrometer-sized X-ray sources, posing numerous limitations, including technical challenges associated with grating fabrication for high-energy operations. We overcome these limitations by developing a TLI system with a microarray anode–structured target (MAAST) source. The MAAST features an array of precisely controlled microstructured metal inserts embedded in a diamond substrate. Using this TLI system, tomography of a Drum fish tooth with high resolution and tri-contrast (absorption, phase, and scattering) reveals useful complementary structural information that is inaccessible otherwise. The results highlight the exceptional capability of high-resolution multicontrast X-ray tomography empowered by the MAAST-based TLI method in biomedical applications.

Published
2021

15. Open data from the first and second observing runs of advanced LIGO and advanced Virgo

Author

Rich&nbsp, Abbott, Thomas&nbsp, Sheelu&nbsp, Abraham, Fausto&nbsp, Acernese, Kendall&nbsp, Ackley, Carl&nbsp, Adams, Rana&nbsp, Adhikari, Vaishali&nbsp, Adya, Christoph&nbsp, Affeldt, Michalis&nbsp, Agathos, Kazuhiro&nbsp, Agatsuma, Nancy&nbsp, Aggarwal, Odylio&nbsp, Aguiar, Amit&nbsp, Aich, Lorenzo&nbsp, Aiello, Anirban&nbsp, Ain, Ajith&nbsp, Parameswaran, Gabrielle&nbsp, Allen, Annalisa&nbsp, Allocca, Paul&nbsp, Altin, Alex&nbsp, Amato, Shreya&nbsp, Anand, Alena&nbsp, Ananyeva, Stuart&nbsp, Anderson, Warren&nbsp, Svetoslava, Angelova, Stefano&nbsp, Ansoldi, Sarah&nbsp, Antier, Stephen&nbsp, Appert, Koji&nbsp, Arai, Melody, Araya, Joseph, Areeda, Marc&nbsp, Arène, Nicolas&nbsp, Arnaud, Scott, Aronson, Arun, Kg, Ascenzi, Gregory&nbsp, Ashton, Stuart, Aston, Pia&nbsp, Astone, Florian&nbsp, Aubin, Peter&nbsp, Aufmuth, Kellie&nbsp, Aultoneal, Corey&nbsp, Austin, Valerie&nbsp, Avendano, Stanislav&nbsp, Babak, Philippe&nbsp, Bacon, Francesca&nbsp, Badaracco, Maria, Bader, Sangwook&nbsp, Bae, Anne, Baer, Jonathon&nbsp, Baird, Baldaccini, Giulio&nbsp, Ballardin, Stefan, Ballmer, Anna-marie&nbsp, Bals, Alexander&nbsp, Balsamo, Baltus, Sharan&nbsp, Banagiri, Deepak&nbsp, Bankar, Rameshwar, Bankar, Juan, Barayoga, Claudio&nbsp, Barbieri, Barry, Barish, David&nbsp, Barker, Kevin&nbsp, Barkett, Pablo&nbsp, Barneo, Fabrizio&nbsp, Barone, Bryan&nbsp, Barr, Lisa&nbsp, Barsotti, Matteo&nbsp, Barsuglia, Daniel&nbsp, Barta, Jeffrey&nbsp, Bartlett, Imre&nbsp, Bartos, Riccardo&nbsp, Bassiri, Andrea&nbsp, Basti, Mateusz&nbsp, Bawaj, Joseph, Bayley, Marco&nbsp, Bazzan, Bence&nbsp, Bécsy, Michal&nbsp, Bejger, Imene&nbsp, Belahcene, Angus, Bell, Deeksha&nbsp, Beniwal, Michael, Benjamin, Joe, Bentley, Fabio&nbsp, Bergamin, Beverly, Berger, Gerald&nbsp, Bergmann, Sebastiano&nbsp, Bernuzzi, Christopher, Berry, Diego&nbsp, Bersanetti, Alessandro&nbsp, Bertolini, Joseph&nbsp, Betzwieser, Rohan&nbsp, Bhandare, Ankit, Bhandari, Bidler, Edward&nbsp, Biggs, Igor, Bilenko, Garilynn&nbsp, Billingsley, Ross&nbsp, Birney, Ofek&nbsp, Birnholtz, Sebastien&nbsp, Biscans, Bischi, Sylvia&nbsp, Biscoveanu, Aparna&nbsp, Bisht, Guldauren&nbsp, Bissenbayeva, Massimiliano&nbsp, Bitossi, Marieanne, Bizouard, Kent, Blackburn, Jonathan&nbsp, Blackman, Carl, Blair, David, Blair, Ryan, Blair, Bobba, Nina&nbsp, Bode, Michel&nbsp, Boer, Yannick&nbsp, Boetzel, Gilles&nbsp, Bogaert, Francois&nbsp, Bondu, Edgard&nbsp, Bonilla, Romain&nbsp, Bonnand, Phillip&nbsp, Booker, Boris, Boom, Rolf&nbsp, Bork, Valerio&nbsp, Boschi, Sukanta&nbsp, Bose, Vladimir&nbsp, Bossilkov, Joel&nbsp, Bosveld, Yann&nbsp, Bouffanais, Antonella&nbsp, Bozzi, Carlo&nbsp, Bradaschia, Patrick, Brady, Alyssa&nbsp, Bramley, Marica&nbsp, Branchesi, Jim, Brau, Breschi, Tristan&nbsp, Briant, Joseph, Briggs, Francesco&nbsp, Brighenti, Alain&nbsp, Brillet, Brinkmann, Patrick&nbsp, Brockill, Aidan, Brooks, Brooks, Daniel, Brown, Sharon&nbsp, Brunett, Giacomo&nbsp, Bruno, Robert&nbsp, Bruntz, Aaron&nbsp, Buikema, Tomasz&nbsp, Bulik, Henk, Bulten, Alessandra&nbsp, Buonanno, Damir&nbsp, Buskulic, Robert, Byer, Miriam&nbsp, Cabero, Laura&nbsp, Cadonati, Giampietro&nbsp, Cagnoli, Craig&nbsp, Cahillane, Juan&nbsp, Calderón&nbsp, Bustillo, Jack, Callaghan, Thomas, Callister, Enrico&nbsp, Calloni, Jordan, Camp, Maurizio&nbsp, Canepa, Kipp, Cannon, Huy-tuong&nbsp, Cao, Junwei&nbsp, Giovanni&nbsp, Carapella, Franco&nbsp, Carbognani, Santiago&nbsp, Caride, Matthew, Carney, Gregorio&nbsp, Carullo, Julia&nbsp, Casanueva&nbsp, Diaz, Claudio&nbsp, Casentini, Javier&nbsp, Castañeda, Sarah&nbsp, Caudill, Marco&nbsp, Cavaglià, Fabien&nbsp, Cavalier, Roberto&nbsp, Cavalieri, Giancarlo&nbsp, Cella, Pablo&nbsp, Cerdá-Durán, Elisabetta&nbsp, Cesarini, Oualid&nbsp, Chaibi, Kabir&nbsp, Chakravarti, Chiwai&nbsp, Chan, Manleong&nbsp, Chan, Shiuh&nbsp, Chao, Philip&nbsp, Charlton, Eve, Chase, Eric&nbsp, Chassande-Mottin, Deep&nbsp, Chatterjee, Mayank&nbsp, Chaturvedi, Hsin-yu, Chen, Xu&nbsp, Chen, Yanbei&nbsp, Hai-ping&nbsp, Cheng, Chi-kit, Cheong, Hanyu, Chia, Chiadini, Roberto&nbsp, Chierici, Chincarini, Antonino&nbsp, Chiummo, Gihyuk&nbsp, Cho, Heesuk, Cho, Min-a&nbsp, Nelson&nbsp, Christensen, Qi&nbsp, Chu, Sheon&nbsp, Chua, Ka-wai, Chung, Shinkee&nbsp, Chung, Ciani, Pawel&nbsp, Ciecielag, Marek&nbsp, Cieślar, Alexei, Ciobanu, Ciolfi, Cipriano, Alessio&nbsp, Cirone, Filiberto&nbsp, Clara, James, Clark, Clearwater, Clesse, Frederic&nbsp, Cleva, Eugenio&nbsp, Coccia, Pierre-francois&nbsp, Cohadon, Cohen, Marta&nbsp, Colleoni, Christophe, Collette, Christopher&nbsp, Collins, Monica&nbsp, Colpi, Marcio&nbsp, Constancio&nbsp, Livia&nbsp, Jr., Conti, Sam, Cooper, Corban, Thomas, Corbitt, Isabel&nbsp, Cordero-Carrión, Silvia&nbsp, Corezzi, Kenneth, Corley, Neil&nbsp, Cornish, Corre, Corsi, Cortese, Cesar, Costa, Cotesta, Michael, Coughlin, Scott, Coughlin, Jeanpierre&nbsp, Coulon, Stefan, Countryman, Couvares, Pep, Covas, David, Coward, Matthew, Cowart, Dennis, Coyne, Coyne, Jolien, &nbsp, Creighton, Teviet, Creighton, Cripe, Michael&nbsp, Croquette, Sgwynne, Crowder, Jean-rene&nbsp, Cudell, Torrey, Cullen, Alan&nbsp, Cumming, Rebecca&nbsp, Cummings, Liam&nbsp, Cunningham, Elena&nbsp, Cuoco, Malgorzata&nbsp, Curylo, Tito&nbsp, Dal&nbsp, Canton, Gergely&nbsp, Dálya, Aykutlu&nbsp, Dana, Lara, Daneshgaran-Bajastani, Beatrice&nbsp, D’Angelo, Stefan, Danilishin, Sabrina&nbsp, D’Antonio, Karsten&nbsp, Danzmann, Christian&nbsp, Darsow-Fromm, Arnab&nbsp, Dasgupta, Laurence, &nbsp, Datrier, Vincenzo&nbsp, Dattilo, Ishant&nbsp, Dave, Michel&nbsp, Davier, Gareth, Davies, Derek&nbsp, Davis, Edward, Daw, Dan&nbsp, Debra, Malathi&nbsp, Deenadayalan, Jerome&nbsp, Degallaix, Martina&nbsp, De&nbsp, Laurentis, Samuel&nbsp, Deléglise, Matthew&nbsp, Delfavero, Nicola&nbsp, Lillo, Walter&nbsp, Del&nbsp, Pozzo, Lindsay, Demarchi, Virginia&nbsp, D’Emilio, Nicholas&nbsp, Demos, Dent, Pietri, Rosario&nbsp, Rosa, Camilla&nbsp, Rossi, Riccardo&nbsp, Desalvo, Omar&nbsp, de&nbsp, Varona, Sanjeev&nbsp, Dhurandhar, Mario, Díaz, Mauricio&nbsp, Diaz-Ortiz&nbsp, Tim&nbsp, Dietrich, Luciano&nbsp, Di&nbsp, Fiore, Chiara&nbsp, Fronzo, Cinzia&nbsp, Giorgio, Giovanni, Matteo&nbsp, Giovanni, Tristano&nbsp, Girolamo, Alberto&nbsp, Lieto, Binlei&nbsp, Ding, Sibilla&nbsp, Pace, Irene&nbsp, Palma, Renzo, Atul, Divakarla, Artemiy&nbsp, Dmitriev, Zoheyr&nbsp, Doctor, Fred&nbsp, Donovan, Katherine, Dooley, Suresh&nbsp, Doravari, Iain&nbsp, Dorrington, Thomas, Downes, Drago, Jenne, Driggers, Zhihui&nbsp, Jean-gregoire&nbsp, Ducoin, Dupej, Ofelia&nbsp, Durante, Domenico&nbsp, D’Urso, Sheila, Dwyer, Paul, Easter, Graeme&nbsp, Eddolls, Bruce&nbsp, Edelman, Tega, Edo, Oliver&nbsp, Edy, Anamaria&nbsp, Effler, Phil&nbsp, Ehrens, Johannes&nbsp, Eichholz, Stephen, Eikenberry, Eisenmann, Robert, Eisenstein, Aldo&nbsp, Ejlli, Lucianolucianikerrico&nbsp, Errico, Reed, Essick, Hector&nbsp, Estelles, Dimitri&nbsp, Estevez, Zachariah, Etienne, Todd&nbsp, Etzel, Matthew&nbsp, Evans, Tom, Evans, Rebecca, Ewing, Viviana&nbsp, Fafone, Fairhurst, Xilong&nbsp, Fan, Stefania&nbsp, Farinon, Benjamin&nbsp, Farr, Will, Farr, Edward, Fauchon-Jones, Favata, Maxime&nbsp, Fays, Mariana&nbsp, Fazio, Jon&nbsp, Feicht, Martin, Fejer, Fangchen&nbsp, Feng, Edit&nbsp, Fenyvesi, Deborah, Ferguson, Alvaro&nbsp, Fernandez-Galiana, Isidoro&nbsp, Ferrante, Elvis, Ferreira, Tabata, Ferreira, Fidecaro, Irene&nbsp, Fiori, Donatella&nbsp, Fiorucci, Maya&nbsp, Fishbach, Ryan, Fisher, Rosalba&nbsp, Fittipaldi, Margot&nbsp, Fitz-Axen, Vincenzo&nbsp, Fiumara, Raffaele&nbsp, Flaminio, Erik&nbsp, Floden, Flynn, Heather&nbsp, Fong, Antonio, Font, Perry&nbsp, Forsyth, Jean-daniel&nbsp, Fournier, Sergio&nbsp, Frasca, Frasconi, Zsolt&nbsp, Frei, Andreas&nbsp, Freise, Raymond&nbsp, Frey, Valentin&nbsp, Fritschel, Valery, Frolov, Gabriele&nbsp, Fronzè, Fulda, Fyffe, Hunter, Gabbard, Bhooshan, Gadre, Sebastian, Gaebel, Jonathan, Gair, Shanika&nbsp, Galaudage, Dhruva&nbsp, Ganapathy, Sharad, Gaonkar, Cecilio&nbsp, García-Quirós, Garufi, Bubba&nbsp, Gateley, Gaudio, Gayathri&nbsp, Gayathri, Gianluca&nbsp, Gemme, Genin, Alberto&nbsp, Gennai, George, Jogy&nbsp, Laszlo&nbsp, Gergely, Sudarshan&nbsp, Ghonge, Abhirup&nbsp, Ghosh, Archisman&nbsp, Shaon&nbsp, Bruno&nbsp, Giacomazzo, Joe, Giaime, Dwayne, Giardina, Des, Gibson, Chalisa&nbsp, Gier, Kiranjyot&nbsp, Gill, Jane&nbsp, Glanzer, Jan&nbsp, Gniesmer, Godwin, Evan&nbsp, Goetz, Ryan&nbsp, Niklas&nbsp, Gohlke, Boris&nbsp, Goncharov, Gabriela&nbsp, González, Gopakumar&nbsp, Gopakumar, Sarah, Gossan, Matthieu&nbsp, Gosselin, Gouaty, Grace, Aniello&nbsp, Grado, Massimo&nbsp, Granata, Alastair&nbsp, Grant, Slawomir&nbsp, Gras, Grassia, Gray, Rachel&nbsp, Giuseppe&nbsp, Greco, Anna, Green, Rhys&nbsp, Green, Elizabeth, Gretarsson, Hannah, Griggs, nbsp, Grignani, Grimaldi, Stefan, Grimm, Hartmut&nbsp, Grote, Steffen&nbsp, Grunewald, Pierre&nbsp, Gruning, Gianluca, Guidi, Andre, Guimaraes, Gerard&nbsp, Guixé, Hitesh, Gulati, Yuefan&nbsp, Guo, Anuradha&nbsp, Gupta, Anchal&nbsp, Pawan&nbsp, Eric, Gustafson, Dick&nbsp, Gustafson, Leila&nbsp, Haegel, Odysse&nbsp, Halim, Evan, Hall, Eleanor, Hamilton, Giles&nbsp, Hammond, Maria&nbsp, Haney, Manuela, Hanke, Hanks, Chad&nbsp, Hanna, Mark, Hannam, Otto, Hannuksela, Travis, Hansen, Joe&nbsp, Hanson, Harder, Terra&nbsp, Hardwick, Haris&nbsp, Haris, Harms, Gregg, Harry, Ian, Harry, Raine, Hasskew, Carl-johan&nbsp, Haster, Karen&nbsp, Haughian, Fergus, Hayes, James&nbsp, Healy, Antoine&nbsp, Heidmann, Matthew, Heintze, Joscha&nbsp, Heinze, Henrich&nbsp, Heitmann, Frances&nbsp, Hellman, Patrice&nbsp, Hello, Gary&nbsp, Hemming, Martin&nbsp, Hendry, Siong, Heng, Hennes, Jan-simon&nbsp, Hennig, Michele&nbsp, Heurs, Stefan&nbsp, Hild, Tanja&nbsp, Hinderer, Sarah, Hoback, Sven&nbsp, Hochheim, Elyssa&nbsp, Hofgard, Hofman, Aaron, Holgado, Nathan, Holland, Kathy&nbsp, Holt, Daniel, Holz, Hopkins, Horst, Hough, Eric, Howell, Charlie, Hoy, Yiwen&nbsp, Huang, Moritz, Hübner, Eliu, Huerta, Dominique&nbsp, Huet, Brennan&nbsp, Hughey, Victor&nbsp, Hui, Sascha&nbsp, Husa, Sabina, Huttner, Rachael&nbsp, Huxford, Tien&nbsp, Huynh-Dinh, Bartosz&nbsp, Idzkowski, Iess, Henri&nbsp, Inchauspe, Ingram, Intini, Jean, Isac, Max&nbsp, Isi, Bala, Iyer, Thibaut&nbsp, Jacqmin, Sameer, Jadhav, Shreejit, Jadhav, Alasdair, James, Karan&nbsp, Jani, Nagaraj, Janthalur, Piotr&nbsp, Jaranowski, Jariwala, Rafel&nbsp, Jaume, Alex, Jenkins, Jun&nbsp, Jiang, Grace, Johns, Aaron, Jones, Ian, Jones, Jeff, Jones, Philip&nbsp, Jones, Russell&nbsp, Reinier, &nbsp, Jonker, Ju&nbsp, Jonas&nbsp, Junker, Chinmay, Kalaghatgi, Vassiliki&nbsp, Kalogera, Brittany&nbsp, Kamai, Shivaraj&nbsp, Kandhasamy, Gungwon&nbsp, Kang, Jonah, Kanner, Shasvath, Kapadia, Karki, Rahul&nbsp, Kashyap, Marie&nbsp, Kasprzack, Wolfgang&nbsp, Kastaun, Stavros&nbsp, Katsanevas, Katsavounidis, William&nbsp, Katzman, Kaufer, Keita&nbsp, Kawabe, Fabien&nbsp, Kéfélian, Keitel, Azadeh&nbsp, Keivani, Kennedy, Joey, Key, Sudiksha&nbsp, Khadka, Farit, Khalili, Imran&nbsp, Khan, Sebastian&nbsp, Zaki, Khan, Efim, Khazanov, Nandita&nbsp, Khetan, Mohammad&nbsp, Khursheed, Nutsinee&nbsp, Kijbunchoo, Chunglee&nbsp, Kim, Grace, Kim, Jeongcho, Kim, Kyungmin&nbsp, Won&nbsp, Whansun, Kim, Young-min&nbsp, Charles&nbsp, Kimball, Peter, King, Kinley-Hanlon, Robin&nbsp, Kirchhoff, Jeffrey, Kissel, Kleybolte, Sergei&nbsp, Klimenko, Tyler, Knowles, Koch, Sina, Koehlenbeck, Gideon&nbsp, Koekoek, Soumen&nbsp, Koley, Veronica&nbsp, Kondrashov, Antonios&nbsp, Kontos, Nico&nbsp, Koper, Mikhail&nbsp, Korobko, William, Korth, Manoj&nbsp, Kovalam, Dan, Kozak, Volker&nbsp, Kringel, Krishnendu, Nv, Andrzej&nbsp, Królak, Natalie&nbsp, Krupinski, Gerrit&nbsp, Kuehn, Anil&nbsp, Kumar, Prayush&nbsp, Rakesh&nbsp, Sumit&nbsp, Ling-chi&nbsp, Kuo, Adam&nbsp, Kutynia, Benjamin, Lackey, Danny&nbsp, Laghi, Emile&nbsp, Lalande, Lam, Lam, Astrid&nbsp, Lamberts, Landry, Benjamin, Lane, Ryan, Lang, Jacob&nbsp, Lange, Brian&nbsp, Lantz, Robert, Lanza, Iuri&nbsp, La&nbsp, Rosa, Angelique&nbsp, Lartaux-Vollard, Paul, Lasky, Laxen, Albert&nbsp, Lazzarini, Claudia&nbsp, Lazzaro, Paola&nbsp, Leaci, Sean&nbsp, Leavey, Yannick, Lecoeuche, Chang-hwan, Lee, Hyung-mok, Lee, Hyungwon, Lee, Joongoo&nbsp, Lee, Kyung-ha&nbsp, Lehmann, Leroy, Letendre, Yuri&nbsp, Levin, Alvin, &nbsp, Jin&nbsp, Kaye&nbsp, Tjonnie, &nbsp, Xiang&nbsp, Frank&nbsp, Linde, Seth, Linker, Jethro, Linley, Tyson, Littenberg, Liu&nbsp, Liu, Xiaoshu&nbsp, Miquel&nbsp, Llorens-Monteagudo, Ka-lok&nbsp, Alexandra&nbsp, Lockwood, Lionel, London, Longo, Lorenzini, Vincent&nbsp, Loriette, Lormand, Losurdo, James, Lough, Carlos, Lousto, Geoffrey&nbsp, Lovelace, Harald&nbsp, Lück, Diana&nbsp, Lumaca, Andrew, Lundgren, Ma&nbsp, Yiqiu, Ronaldas&nbsp, Macas, Macfoy, Myron&nbsp, Macinnis, Duncan, Macleod, Ian, Macmillan, Adrian&nbsp, Macquet, Ignacio&nbsp, Magaña&nbsp, Hernandez, Fabian&nbsp, Magaña-Sandoval, Ryan, Magee, Ettore&nbsp, Majorana, Ivan&nbsp, Maksimovic, Asmita&nbsp, Malik, Catherine&nbsp, Man, Vuk&nbsp, Mandic, Valentina&nbsp, Mangano, Georgia, Mansell, Manske, Maddalena&nbsp, Mantovani, Michela&nbsp, Mapelli, Marchesoni, Frederique&nbsp, Marion, Szabolcs&nbsp, Márka, Zsuzsanna&nbsp, Charalampos&nbsp, Markakis, Ashot, Markosyan, Markowitz, Ed&nbsp, Maros, Antonio&nbsp, Marquina, Sylvain&nbsp, Marsat, Filippo&nbsp, Martelli, Ian, Martin, Rodica, Martin, Martinez, Denis, Martynov, Hossein&nbsp, Masalehdan, Ken&nbsp, Mason, Massera, Masserot, Thomas, Massinger, Mariela&nbsp, Masso-Reid, Simone&nbsp, Mastrogiovanni, Andrew&nbsp, Matas, Fabrice&nbsp, Matichard, Nergis&nbsp, Mavalvala, Emily&nbsp, Maynard, Joshua, Mccann, Richard&nbsp, Mccarthy, David, Mcclelland, Scott&nbsp, Mccormick, Lee&nbsp, Mcculler, Stephen, Mcguire, Connor&nbsp, Mcisaac, Jessica&nbsp, Mciver, David, Mcmanus, Terry&nbsp, Mcrae, Sean, Mcwilliams, Duncan&nbsp, Meacher, Grant, Meadors, Moritz&nbsp, Mehmet, Ajit, Mehta, Mejuto&nbsp, Villa, Andrew&nbsp, Melatos, Gregory&nbsp, Mendell, Adam, Mercer, Mereni, Kara&nbsp, Merfeld, Edmond, Merilh, Jonathan, Merritt, Mourad&nbsp, Merzougui, Syd&nbsp, Meshkov, Chris&nbsp, Messenger, Cody&nbsp, Messick, Remi&nbsp, Metzdorff, Patrick, Meyers, Fabian&nbsp, Meylahn, Ashish&nbsp, Mhaske, Miani, Haixing&nbsp, Miao, Ioannis&nbsp, Michaloliakos, Christophe&nbsp, Michel, Hannah&nbsp, Middleton, Leopoldo&nbsp, Milano, Andrewlawrence, Miller, Meg&nbsp, Millhouse, Joseph, Mills, Edoardo&nbsp, Milotti, Michael, Milovich-Goff, Olivier&nbsp, Minazzoli, Minenkov, Alec&nbsp, Mishkin, Chandra&nbsp, Mishra, Timesh&nbsp, Mistry, Sanjit&nbsp, Mitra, Valery, Mitrofanov, Guenakh&nbsp, Mitselmakher, Mittleman, Kentaro&nbsp, Mogushi, Satyanarayan, &nbsp, Mohapatra, Siddharth, Mohite, Manel&nbsp, Molina-Ruiz, Marina&nbsp, Mondin, Montani, Christopher, Moore, Moraru, Filip&nbsp, Morawski, Gerardo&nbsp, Moreno, Soichiro&nbsp, Morisaki, Benoit&nbsp, Mours, Conor, Mow-Lowry, Mozzon, Federico&nbsp, Muciaccia, Arunava&nbsp, Mukherjee, Debnandini&nbsp, Soma&nbsp, Subroto&nbsp, Nikhil&nbsp, Mukund, Mullavey, Jesper&nbsp, Munch, Erik, Muñiz, Peter, Murray, Nagar, Ilaria&nbsp, Nardecchia, Luca&nbsp, Naticchioni, Rajesh, Nayak, Benjamin, Neil, Joshua&nbsp, Neilson, Gijs&nbsp, Nelemans, Timothy, &nbsp, Nelson, Marina&nbsp, Nery, Ansel&nbsp, Neunzert, Kwan-yeung, Ng, Nguyen, Nichols, Shania, Nichols, Samaya&nbsp, Nissanke, Flavio&nbsp, Nocera, Minkyun&nbsp, Noh, North, Devon&nbsp, Nothard, Laura, Nuttall, Jason&nbsp, Oberling, Brendan, O’Brien, Gor&nbsp, Oganesyan, Greg, Ogin, John, Oh, Sanghoon, Oh, Ohme, Hiroaki&nbsp, Ohta, Marcos, Okada, Oliver, Olivetto, Oppermann, Oram, O’Reilly, Rich, Ormiston, Luis, Ortega, O’Shaughnessy, Serguei&nbsp, Ossokine, Osthelder, David, Ottaway, Harry&nbsp, Overmier, Ben, Owen, Alexander, Pace, Giulia&nbsp, Pagano, Michael, Page, Pagliaroli, Archana&nbsp, Pai, Siddhesh, Pai, Jordan, Palamos, Oleg&nbsp, Palashov, Cristiano&nbsp, Palomba, Howard&nbsp, Pan, Pratap, Panda, Tsun-ho&nbsp, Pang, Pankow, Pannarale, F, Brijesh, Pant, Paoletti, Paoli, Abhishek&nbsp, Parida, Parker, Daniela&nbsp, Pascucci, Pasqualetti, Passaquieti, Passuello, Barbara&nbsp, Patricelli, Ethan&nbsp, Payne, Brynley, Pearlstone, Thida, Pechsiri, Ari, Pedersen, Mike&nbsp, Pedraza, Arnaud&nbsp, Pele, Steven&nbsp, Penn, Albino&nbsp, Perego, Carlos, Perez, Perigois&nbsp, Périgois, Perreca, Stephane&nbsp, Perriès, Petermann, Harald, Pfeiffer, Phelps, Khun, Phukon, Ornella, Piccinni, Mikhael&nbsp, Pichot, Piendibene, Piergiovanni, Pierro, Gabriel&nbsp, Pillant, Laurent&nbsp, Pinard, Innocenzo, Pinto, Krzysztof&nbsp, Piotrzkowski, Pirello, Pitkin, Wolfango&nbsp, Plastino, Rosa&nbsp, Poggiani, Yat-tung, Pong, Ponrathnam, Pasquale&nbsp, Popolizio, Porter, Ed, Jade&nbsp, Powell, Atul, Prajapati, Kiran&nbsp, Prasai, Raghurama&nbsp, Prasanna, Geraint&nbsp, Pratten, Tanner&nbsp, Prestegard, Principe, Prodi, Leonid&nbsp, Prokhorov, Punturo, Puppo, Pürrer, Hong&nbsp, Quetschke, Pedro, Quinonez, Fred, Raab, Geert&nbsp, Raaijmakers, Hugh&nbsp, Radkins, Radulesco, Raffai, Hanna&nbsp, Rafferty, Sendhil&nbsp, Raja, Rajan&nbsp, Rajan, Binod&nbsp, Rajbhandari, Malik&nbsp, Rakhmanov, Karla, Ramirez, Antoni&nbsp, Ramos-Buades, Javed&nbsp, Rana, Kaushik&nbsp, Rao, Piero&nbsp, Rapagnani, Vivien&nbsp, Raymond, Razzano, Jocelyn&nbsp, Read, Tania&nbsp, Regimbau, Rei, Reid, David, Reitze, Rettegno, Fulvio&nbsp, Ricci, Colter, Richardson, Jonathan, Richardson, Paul, Ricker, Gunnar&nbsp, Riemenschneider, Keith&nbsp, Riles, Rizzo, Norna, Robertson, Florent&nbsp, Robinet, Rocchi, Ramon, Rodriguez-Soto, Loic&nbsp, Rolland, Jameson, Rollins, Vincent, Roma, Romanelli, Rocco&nbsp, Romano, Chandra, Romel, Isobel, Romero-Shaw, Janeen, Romie, Caitlin, Rose, Dakota&nbsp, Rose, Kyle&nbsp, Dorota&nbsp, Rosińska, Shawn, Rosofsky, Michael, Ross, Sheila&nbsp, Rowan, Samuel, Rowlinson, Palash, Roy, Santosh&nbsp, Roy, Paolo&nbsp, Ruggi, Guntis&nbsp, Rutins, Ryan, Surabhi&nbsp, Sachdev, Travis&nbsp, Sadecki, Mairi&nbsp, Sakellariadou, Salafia, Om, Livio&nbsp, Salconi, Muhammed&nbsp, Saleem, Samajdar, Eduardo, Sanchez, Luis, Sanchez, Sanchis-Gual, Jaclyn, Sanders, Kevin, Santiago, Edison&nbsp, Santos, Sarin, Sassolas, Sathyaprakash, B, Orion&nbsp, Sauter, Richard, Savage, Vaibhav&nbsp, Savant, Disha&nbsp, Sawant, Sihem&nbsp, Sayah, Dean&nbsp, Schaetzl, Schale, Mark&nbsp, Scheel, Scheuer, Patricia&nbsp, Schmidt, Roman&nbsp, Schnabel, Robert, &nbsp, Schofield, Axel&nbsp, Schönbeck, Emil&nbsp, Schreiber, Bernd, Schulte, Bernard, Schutz, Otto&nbsp, Schwarm, Eyal&nbsp, Schwartz, Jamie&nbsp, Scott, Susan, Scott, Seidel, Sellers, Anand, Sengupta, Noah&nbsp, Sennett, Sentenac, Valeria&nbsp, Sequino, Sergeev, Yoshinta&nbsp, Setyawati, Daniel, Shaddock, Shaffer, Selim, Shahriar, Sharma, Priyanka&nbsp, Shawhan, Hongyu&nbsp, Shen, Minori&nbsp, Shikauchi, Rosalie&nbsp, Shink, David, Shoemaker, Deirdre, Shoemaker, Keerti&nbsp, Shukla, Shyamsundar&nbsp, Shyamsundar, Karelle&nbsp, Siellez, Magdalena&nbsp, Sieniawska, Sigg, Leo, Singer, Divya&nbsp, Singh, Neha&nbsp, Ayatri&nbsp, Singha, Akshat&nbsp, Singhal, Alicia, Sintes, Sipala, Vasileios&nbsp, Skliris, Bram, &nbsp, Slagmolen, Teresa, Slaven-Blair, Jiri&nbsp, Smetana, Joshua, Smith, Rory, &nbsp, Smith, Surendranadh&nbsp, Somala, Edwin, Son, Siddharth&nbsp, Soni, Borja&nbsp, Sorazu, Viola&nbsp, Sordini, Fiodor&nbsp, Sorrentino, Tarun&nbsp, Souradeep, Sowell, Andrew, Spencer, Mario&nbsp, Spera, Amit, Srivastava, Varun&nbsp, Srivastava, Kai&nbsp, Staats, Cosmin&nbsp, Stachie, Standke, Daniele, Steer, Steinke, Steinlechner, Steinmeyer, Dane&nbsp, Stocks, David, Stops, Madeline&nbsp, Stover, Ken, Strain, Stratta, Amber&nbsp, Strunk, Sturani, Amber, Stuver, Sudhagar&nbsp, Sudhagar, Vivishek&nbsp, Sudhir, Tiffany, Summerscales, Ling&nbsp, Sun, Sunil&nbsp, Sunil, Ankan&nbsp, Sur, Jishnu&nbsp, Suresh, Patrick, Sutton, Bas, Swinkels, Marek, Szczepańczyk, Tacca, Simon, Tait, Colm&nbsp, Talbot, Andres, Tanasijczuk, David, Tanner, Duo&nbsp, Tao, Marton&nbsp, Tápai, Amauri&nbsp, Tapia, Enzo, Tapia&nbsp, San&nbsp, Martin, 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Joris, Van&nbsp, Heijningen, Marielle, van&nbsp, Veggel, Marco&nbsp, Vardaro, Vijay&nbsp, Varma, Steve&nbsp, Vass, Matyas&nbsp, Vasúth, Alberto&nbsp, Vecchio, Gabriele&nbsp, Vedovato, John&nbsp, Veitch, Peter, Veitch, Krishna&nbsp, Venkateswara, Gautam&nbsp, Venugopalan, Didier&nbsp, Verkindt, Doga&nbsp, Veske, Vetrano, Viceré, Aaron, Viets, Serena&nbsp, Vinciguerra, David, Vine, Jeanyves&nbsp, Vinet, Salvatore&nbsp, Vitale, Francisco&nbsp, Hernandez&nbsp, Vivanco, Thomas&nbsp, Helios&nbsp, Vocca, Cheryl&nbsp, Vorvick, Sergey, Vyatchanin, Andrew, Wade, Leslie, Wade, Wade, Rob&nbsp, Walet, Marissa&nbsp, Walker, Gavin, Wallace, Larry&nbsp, Wallace, Sinead&nbsp, Walsh, Jonathan, Wang, Sibo&nbsp, Wang, Wenhui, Wang, Yifan, Wang, Robert, Ward, Zane, Warden, Jim&nbsp, Warner, Was, Jennifer&nbsp, Watchi, Betsy&nbsp, Weaver, Li-wei&nbsp, Wei, Weinert, Alan, Weinstein, Rainer&nbsp, Weiss, Felix&nbsp, Wellmann, Linqing&nbsp, Wen, Weßels, Jonathan, Westhouse, Wette, John, Whelan, Bernard, 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Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Astrophysique Relativiste Théories Expériences 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physics, RS: FSE Grav. waves and fundamental physics, RS: FSE MSP, Abbott, R., Abbott, T. D., Abraham, S., Acernese, F., Ackley, K., Adams, C., Adhikari, R. X., Adya, V. B., Affeldt, C., Agathos, M., Agatsuma, K., Aggarwal, N., Aguiar, O. D., Aich, A., Aiello, L., Ain, A., Ajith, P., Allen, G., Allocca, A., Altin, P. A., Amato, A., Anand, S., Ananyeva, A., Anderson, S. B., Anderson, W. G., Angelova, S. V., Ansoldi, S., Antier, S., Appert, S., Arai, K., Araya, M. C., Areeda, J. S., Arène, M., Arnaud, N., Aronson, S. M., Arun, K. G., Ascenzi, S., Ashton, G., Aston, S. M., Astone, P., Aubin, F., Aufmuth, P., Aultoneal, K., Austin, C., Avendano, V., Babak, S., Bacon, P., Badaracco, F., Bader, M. K. M., Bae, S., Baer, A. M., Baird, J., Baldaccini, F., Ballardin, G., Ballmer, S. W., Bals, A., Balsamo, A., Baltus, G., Banagiri, S., Bankar, D., Bankar, R. S., Barayoga, J. C., Barbieri, C., Barish, B. C., Barker, D., Barkett, K., Barneo, P., Barone, F., Barr, B., Barsotti, L., Barsuglia, M., Barta, D., Bartlett, J., Bartos, I., Bassiri, R., Basti, A., Bawaj, M., Bayley, J. 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A., Ciolfi, R., Cipriano, F., Cirone, A., Clara, F., Clark, J. A., Clearwater, P., Clesse, S., Cleva, F., Coccia, E., Cohadon, P. -F., Cohen, D., Colleoni, M., Collette, C. G., Collins, C., Colpi, M., Constancio, M., Conti, L., Cooper, S. J., Corban, P., Corbitt, T. R., Cordero-Carrión, I., Corezzi, S., Corley, K. R., Cornish, N., Corre, D., Corsi, A., Cortese, S., Costa, C. A., Cotesta, R., Coughlin, M. W., Coughlin, S. B., Coulon, J. -P., Countryman, S. T., Couvares, P., Covas, P. B., Coward, D. M., Cowart, M. J., Coyne, D. C., Coyne, R., Creighton, J. D. E., Creighton, T. D., Cripe, J., Croquette, M., Crowder, S. G., Cudell, J. -R., Cullen, T. J., Cumming, A., Cummings, R., Cunningham, L., Cuoco, E., Curylo, M., Canton, T. Dal, Dálya, G., Dana, A., Daneshgaran-Bajastani, L. M., D’Angelo, B., Danilishin, S. L., D’Antonio, S., Danzmann, K., Darsow-Fromm, C., Dasgupta, A., Datrier, L. E. H., Dattilo, V., Dave, I., Davier, M., Davies, G. S., Davis, D., Daw, E. 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R., Molina-Ruiz, M., Mondin, M., Montani, M., Moore, C. J., Moraru, D., Morawski, F., Moreno, G., Morisaki, S., Mours, B., Mow-Lowry, C. M., Mozzon, S., Muciaccia, F., Mukherjee, Arunava, Mukherjee, D., Mukherjee, S., Mukherjee, Subroto, Mukund, N., Mullavey, A., Munch, J., Muñiz, E. A., Murray, P. G., Nagar, A., Nardecchia, I., Naticchioni, L., Nayak, R. K., Neil, B. F., Neilson, J., Nelemans, G., Nelson, T. J. N., Nery, M., Neunzert, A., Ng, K. Y., Ng, S., Nguyen, C., Nguyen, P., Nichols, D., Nichols, S. A., Nissanke, S., Nocera, F., Noh, M., North, C., Nothard, D., Nuttall, L. K., Oberling, J., O’Brien, B. D., Oganesyan, G., Ogin, G. H., Oh, J. J., Oh, S. H., Ohme, F., Ohta, H., Okada, M. A., Oliver, M., Olivetto, C., Oppermann, P., Oram, Richard J., O’Reilly, B., Ormiston, R. G., Ortega, L. F., O’Shaughnessy, R., Ossokine, S., Osthelder, C., Ottaway, D. J., Overmier, H., Owen, B. J., Pace, A. E., Pagano, G., Page, M. A., Pagliaroli, G., Pai, A., Pai, S. A., Palamos, J. R., Palashov, O., Palomba, C., Pan, H., Panda, P. K., Pang, P. T. H., Pankow, C., Pannarale, F., Pant, B. C., Paoletti, F., Paoli, A., Parida, A., Parker, W., Pascucci, D., Pasqualetti, A., Passaquieti, R., Passuello, D., Patricelli, B., Payne, E., Pearlstone, B. L., Pechsiri, T. C., Pedersen, A. J., Pedraza, M., Pele, A., Penn, S., Perego, A., Perez, C. J., Périgois, C., Perreca, A., Perriès, S., Petermann, J., Pfeiffer, H. P., Phelps, M., Phukon, K. S., Piccinni, O. J., Pichot, M., Piendibene, M., Piergiovanni, F., Pierro, V., Pillant, G., Pinard, L., Pinto, I. M., Piotrzkowski, K., Pirello, M., Pitkin, M., Plastino, W., Poggiani, R., Pong, D. Y. T., Ponrathnam, S., Popolizio, P., Porter, E. K., Powell, J., Prajapati, A. K., Prasai, K., Prasanna, R., Pratten, G., Prestegard, T., Principe, M., Prodi, G. A., Prokhorov, L., Punturo, M., Puppo, P., Pürrer, M., Qi, H., Quetschke, V., Quinonez, P. J., Raab, F. 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J., Weiss, R., Wellmann, F., Wen, L., Weßels, P., Westhouse, J. W., Wette, K., Whelan, J. T., Whiting, B. F., Whittle, C., Wilken, D. M., Williams, D., Williams, R. D., Williamson, A. R., Willis, J. L., Willke, B., Winkler, W., Wipf, C. C., Wittel, H., Woan, G., Woehler, J., Wofford, J. K., Wong, C., Wright, J. L., Wu, D. S., Wysocki, D. M., Xiao, L., Yamamoto, H., Yang, L., Yang, Y., Yang, Z., Yap, M. J., Yazback, M., Yeeles, D. W., Yu, Hang, Yu, Haocun, Yuen, S. H. R., Zadrożny, A. K., Zadrożny, A., Zanolin, M., Zelenova, T., Zendri, J. -P., Zevin, M., Zhang, J., Zhang, L., Zhang, T., Zhao, C., Zhao, G., Zhou, M., Zhou, Z., Zhu, X. J., Zimmerman, A. B., Zucker, M. E., Zweizig, J., Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Université Nice Sophia Antipolis (... - 2019) (UNS), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Collège de France (CdF (institution)), Abbott, R, Abbott, T, Abraham, S, Acernese, F, Ackley, K, Adams, C, Adhikari, R, Adya, V, Affeldt, C, Agathos, M, Agatsuma, K, Aggarwal, N, Aguiar, O, Aich, A, Aiello, L, Ain, A, Ajith, P, Allen, G, Allocca, A, Altin, P, Amato, A, Anand, S, Ananyeva, A, Anderson, S, Anderson, W, Angelova, S, Ansoldi, S, Antier, S, Appert, S, Arai, K, Araya, M, Areeda, J, Arene, M, Arnaud, N, Aronson, S, Arun, K, Ascenzi, S, Ashton, G, Aston, S, Astone, P, Aubin, F, Aufmuth, P, Aultoneal, K, Austin, C, Avendano, V, Babak, S, Bacon, P, Badaracco, F, Bader, M, Bae, S, Baer, A, Baird, J, Baldaccini, F, Ballardin, G, Ballmer, S, Bals, A, Balsamo, A, Baltus, G, Banagiri, S, Bankar, D, Bankar, R, Barayoga, J, Barbieri, C, Barish, B, Barker, D, Barkett, K, Barneo, P, Barone, F, Barr, B, Barsotti, L, Barsuglia, M, Barta, D, Bartlett, J, Bartos, I, Bassiri, R, Basti, A, Bawaj, M, Bayley, J, Bazzan, M, Becsy, B, Bejger, M, Belahcene, I, Bell, A, Beniwal, D, Benjamin, M, Bentley, J, Bergamin, F, Berger, B, Bergmann, G, Bernuzzi, S, Berry, C, Bersanetti, D, Bertolini, A, Betzwieser, J, Bhandare, R, Bhandari, A, Bidler, J, Biggs, E, Bilenko, I, Billingsley, G, Birney, R, Birnholtz, O, Biscans, S, Bischi, M, Biscoveanu, S, Bisht, A, Bissenbayeva, G, Bitossi, M, Bizouard, M, Blackburn, J, Blackman, J, Blair, C, Blair, D, Blair, R, Bobba, F, Bode, N, Boer, M, Boetzel, Y, Bogaert, G, Bondu, F, Bonilla, E, Bonnand, R, Booker, P, Boom, B, Bork, R, Boschi, V, Bose, S, Bossilkov, V, Bosveld, J, Bouffanais, Y, Bozzi, A, Bradaschia, C, Brady, P, Bramley, A, Branchesi, M, Brau, J, Breschi, M, Briant, T, Briggs, J, Brighenti, F, Brillet, A, Brinkmann, M, Brockill, P, Brooks, A, Brooks, J, Brown, D, Brunett, S, Bruno, G, Bruntz, R, Buikema, A, Bulik, T, Bulten, H, Buonanno, A, Buskulic, D, Byer, R, Cabero, M, Cadonati, L, Cagnoli, G, Cahillane, C, Bustillo, J, Callaghan, J, Callister, T, Calloni, E, Camp, J, Canepa, M, Cannon, K, Cao, H, Cao, J, Carapella, G, Carbognani, F, Caride, S, Carney, M, Carullo, G, Diaz, J, Casentini, C, Castaneda, J, Caudill, S, Cavaglia, M, Cavalier, F, Cavalieri, R, Cella, G, Cerda-Duran, P, Cesarini, E, Chaibi, O, Chakravarti, K, Chan, C, Chan, M, Chao, S, Charlton, P, Chase, E, Chassande-Mottin, E, Chatterjee, D, Chaturvedi, M, Chen, H, Chen, X, Chen, Y, Cheng, H, Cheong, C, Chia, H, Chiadini, F, Chierici, R, Chincarini, A, Chiummo, A, Cho, G, Cho, H, Cho, M, Christensen, N, Chu, Q, Chua, S, Chung, K, Chung, S, Ciani, G, Ciecielag, P, Cieslar, M, Ciobanu, A, Ciolfi, R, Cipriano, F, Cirone, A, Clara, F, Clark, J, Clearwater, P, Clesse, S, Cleva, F, Coccia, E, Cohadon, P, Cohen, D, Colleoni, M, Collette, C, Collins, C, Colpi, M, Constancio, M, Conti, L, Cooper, S, Corban, P, Corbitt, T, Cordero-Carrion, I, Corezzi, S, Corley, K, Cornish, N, Corre, D, Corsi, A, Cortese, S, Costa, C, Cotesta, R, Coughlin, M, Coughlin, S, Coulon, J, Countryman, S, Couvares, P, Covas, P, Coward, D, Cowart, M, Coyne, D, Coyne, R, Creighton, J, Creighton, T, Cripe, J, Croquette, M, Crowder, S, Cudell, J, Cullen, T, Cumming, A, Cummings, R, Cunningham, L, Cuoco, E, Curylo, M, Canton, T, Dalya, G, Dana, A, Daneshgaran-Bajastani, L, D'Angelo, B, Danilishin, S, D'Antonio, S, Danzmann, K, Darsow-Fromm, C, Dasgupta, A, Datrier, L, Dattilo, V, Dave, I, Davier, M, Davies, G, Davis, D, Daw, E, Debra, D, Deenadayalan, M, Degallaix, J, De Laurentis, M, Deleglise, S, Delfavero, M, De Lillo, N, Del Pozzo, W, Demarchi, L, D'Emilio, V, Demos, N, Dent, T, De Pietri, R, De Rosa, R, De Rossi, C, Desalvo, R, de Varona, O, Dhurandhar, S, Diaz, M, Diaz-Ortiz, M, Dietrich, T, Di Fiore, L, Di Fronzo, C, Di Giorgio, C, Di Giovanni, F, Di Giovanni, M, Di Girolamo, T, Di Lieto, A, Ding, B, Di Pace, S, Di Palma, I, Di Renzo, F, Divakarla, A, Dmitriev, A, Doctor, Z, Donovan, F, Dooley, K, Doravari, S, Dorrington, I, Downes, T, Drago, M, Driggers, J, Du, Z, Ducoin, J, Dupej, P, Durante, O, D'Urso, D, Dwyer, S, Easter, P, Eddolls, G, Edelman, B, Edo, T, Edy, O, Effler, A, Ehrens, P, Eichholz, J, Eikenberry, S, Eisenmann, M, Eisenstein, R, Ejlli, A, Errico, L, Essick, R, Estelles, H, Estevez, D, Etienne, Z, Etzel, T, Evans, M, Evans, T, Ewing, B, Fafone, V, Fairhurst, S, Fan, X, Farinon, S, Farr, B, Farr, W, Fauchon-Jones, E, Favata, M, Fays, M, Fazio, M, Feicht, J, Fejer, M, Feng, F, Fenyvesi, E, Ferguson, D, Fernandez-Galiana, A, Ferrante, I, Ferreira, E, Ferreira, T, Fidecaro, F, Fiori, I, Fiorucci, D, Fishbach, M, Fisher, R, Fittipaldi, R, Fitz-Axen, M, Fiumara, V, Flaminio, R, Floden, E, Flynn, E, Fong, H, Font, J, Forsyth, P, Fournier, J, Frasca, S, Frasconi, F, Frei, Z, Freise, A, Frey, R, Frey, V, Fritschel, P, Frolov, V, Fronze, G, Fulda, P, Fyffe, M, Gabbard, H, Gadre, B, Gaebel, S, Gair, J, Galaudage, S, Ganapathy, D, Gaonkar, S, Garcia-Quiros, C, Garufi, F, Gateley, B, Gaudio, S, Gayathri, V, Gemme, G, Genin, E, Gennai, A, George, D, George, J, Gergely, L, Ghonge, S, Ghosh, A, Ghosh, S, Giacomazzo, B, Giaime, J, Giardina, K, Gibson, D, Gier, C, Gill, K, Glanzer, J, Gniesmer, J, Godwin, P, Goetz, E, Goetz, R, Gohlke, N, Goncharov, B, Gonzalez, G, Gopakumar, A, Gossan, S, Gosselin, M, Gouaty, R, Grace, B, Grado, A, Granata, M, Grant, A, Gras, S, Grassia, P, Gray, C, Gray, R, Greco, G, Green, A, Green, R, Gretarsson, E, Griggs, H, Grignani, G, Grimaldi, A, Grimm, S, Grote, H, Grunewald, S, Gruning, P, Guidi, G, Guimaraes, A, Guixe, G, Gulati, H, Guo, Y, Gupta, A, Gupta, P, Gustafson, E, Gustafson, R, Haegel, L, Halim, O, Hall, E, Hamilton, E, Hammond, G, Haney, M, Hanke, M, Hanks, J, Hanna, C, Hannam, M, Hannuksela, O, Hansen, T, Hanson, J, Harder, T, Hardwick, T, Haris, K, Harms, J, Harry, G, Harry, I, Hasskew, R, Haster, C, Haughian, K, Hayes, F, Healy, J, Heidmann, A, Heintze, M, Heinze, J, Heitmann, H, Hellman, F, Hello, P, Hemming, G, Hendry, M, Heng, I, Hennes, E, Hennig, J, Heurs, M, Hild, S, Hinderer, T, Hoback, S, Hochheim, S, Hofgard, E, Hofman, D, Holgado, A, Holland, N, Holt, K, Holz, D, Hopkins, P, Horst, C, Hough, J, Howell, E, Hoy, C, Huang, Y, Hubner, M, Huerta, E, Huet, D, Hughey, B, Hui, V, Husa, S, Huttner, S, Huxford, R, Huynh-Dinh, T, Idzkowski, B, Iess, A, Inchauspe, H, Ingram, C, Intini, G, Isac, J, Isi, M, Iyer, B, Jacqmin, T, Jadhav, S, James, A, Jani, K, Janthalur, N, Jaranowski, P, Jariwala, D, Jaume, R, Jenkins, A, Jiang, J, Johns, G, Jones, A, Jones, D, Jones, J, Jones, P, Jones, R, Jonker, R, Ju, L, Junker, J, Kalaghatgi, C, Kalogera, V, Kamai, B, Kandhasamy, S, Kang, G, Kanner, J, Kapadia, S, Karki, S, Kashyap, R, Kasprzack, M, Kastaun, W, Katsanevas, S, Katsavounidis, E, Katzman, W, Kaufer, S, Kawabe, K, Kefelian, F, Keitel, D, Keivani, A, Kennedy, R, Key, J, Khadka, S, Khalili, F, Khan, I, Khan, S, Khan, Z, Khazanov, E, Khetan, N, Khursheed, M, Kijbunchoo, N, Kim, C, Kim, G, Kim, J, Kim, K, Kim, W, Kim, Y, Kimball, C, King, P, Kinley-Hanlon, M, Kirchhoff, R, Kissel, J, Kleybolte, L, Klimenko, S, Knowles, T, Koch, P, Koehlenbeck, S, Koekoek, G, Koley, S, Kondrashov, V, Kontos, A, Koper, N, Korobko, M, Korth, W, Kovalam, M, Kozak, D, Kringel, V, Krishnendu, N, Krolak, A, Krupinski, N, Kuehn, G, Kumar, A, Kumar, P, Kumar, R, Kumar, S, Kuo, L, Kutynia, A, Lackey, B, Laghi, D, Lalande, E, Lam, T, Lamberts, A, Landry, M, Lane, B, Lang, R, Lange, J, Lantz, B, Lanza, R, La Rosa, I, Lartaux-Vollard, A, Lasky, P, Laxen, M, Lazzarini, A, Lazzaro, C, Leaci, P, Leavey, S, Lecoeuche, Y, Lee, C, Lee, H, Lee, J, Lee, K, Lehmann, J, Leroy, N, Letendre, N, Levin, Y, Li, A, Li, J, Li, K, Li, T, Li, X, Linde, F, Linker, S, Linley, J, Littenberg, T, Liu, J, Liu, X, Llorens-Monteagudo, M, Lo, R, Lockwood, A, London, L, Longo, A, Lorenzini, M, Loriette, V, Lormand, M, Losurdo, G, Lough, J, Lousto, C, Lovelace, G, Luck, H, Lumaca, D, Lundgren, A, Ma, Y, Macas, R, Macfoy, S, Macinnis, M, Macleod, D, Macmillan, I, Macquet, A, Hernandez, I, Magana-Sandoval, F, Magee, R, Majorana, E, Maksimovic, I, Malik, A, Man, N, Mandic, V, Mangano, V, Mansell, G, Manske, M, Mantovani, M, Mapelli, M, Marchesoni, F, Marion, F, Marka, S, Marka, Z, Markakis, C, Markosyan, A, Markowitz, A, Maros, E, Marquina, A, Marsat, S, Martelli, F, Martin, I, Martin, R, Martinez, V, Martynov, D, Masalehdan, H, Mason, K, Massera, E, Masserot, A, Massinger, T, Masso-Reid, M, Mastrogiovanni, S, Matas, A, Matichard, F, Mavalvala, N, Maynard, E, Mccann, J, Mccarthy, R, Mcclelland, D, Mccormick, S, Mcculler, L, Mcguire, S, Mcisaac, C, Mciver, J, Mcmanus, D, Mcrae, T, Mcwilliams, S, Meacher, D, Meadors, G, Mehmet, M, Mehta, A, Villa, E, Melatos, A, Mendell, G, Mercer, R, Mereni, L, Merfeld, K, Merilh, E, Merritt, J, Merzougui, M, Meshkov, S, Messenger, C, Messick, C, Metzdorff, R, Meyers, P, Meylahn, F, Mhaske, A, Miani, A, Miao, H, Michaloliakos, I, Michel, C, Middleton, H, Milano, L, Miller, A, Millhouse, M, Mills, J, Milotti, E, Milovich-Goff, M, Minazzoli, O, Minenkov, Y, Mishkin, A, Mishra, C, Mistry, T, Mitra, S, Mitrofanov, V, Mitselmakher, G, Mittleman, R, Mo, G, Mogushi, K, Mohapatra, S, Mohite, S, Molina-Ruiz, M, Mondin, M, Montani, M, Moore, C, Moraru, D, Morawski, F, Moreno, G, Morisaki, S, Mours, B, Mow-Lowry, C, Mozzon, S, Muciaccia, F, Mukherjee, A, Mukherjee, D, Mukherjee, S, Mukund, N, Mullavey, A, Munch, J, Muniz, E, Murray, P, Nagar, A, Nardecchia, I, Naticchioni, L, Nayak, R, Neil, B, Neilson, J, Nelemans, G, Nelson, T, Nery, M, Neunzert, A, Ng, K, Ng, S, Nguyen, C, Nguyen, P, Nichols, D, Nichols, S, Nissanke, S, Nocera, F, Noh, M, North, C, Nothard, D, Nuttall, L, Oberling, J, O'Brien, B, Oganesyan, G, Ogin, G, Oh, J, Oh, S, Ohme, F, Ohta, H, Okada, M, Oliver, M, Olivetto, C, Oppermann, P, Oram, R, O'Reilly, B, Ormiston, R, Ortega, L, O'Shaughnessy, R, Ossokine, S, Osthelder, C, Ottaway, D, Overmier, H, Owen, B, Pace, A, Pagano, G, Page, M, Pagliaroli, G, Pai, A, Pai, S, Palamos, J, Palashov, O, Palomba, C, Pan, H, Panda, P, Pang, P, Pankow, C, Pannarale, F, Pant, B, Paoletti, F, Paoli, A, Parida, A, Parker, W, Pascucci, D, Pasqualetti, A, Passaquieti, R, Passuello, D, Patricelli, B, Payne, E, Pearlstone, B, Pechsiri, T, Pedersen, A, Pedraza, M, Pele, A, Penn, S, Perego, A, Perez, C, Perigois, C, Perreca, A, Perries, S, Petermann, J, Pfeiffer, H, Phelps, M, Phukon, K, Piccinni, O, Pichot, M, Piendibene, M, Piergiovanni, F, Pierro, V, Pillant, G, Pinard, L, Pinto, I, Piotrzkowski, K, Pirello, M, Pitkin, M, Plastino, W, Poggiani, R, Pong, D, Ponrathnam, S, Popolizio, P, Porter, E, Powell, J, Prajapati, A, Prasai, K, Prasanna, R, Pratten, G, Prestegard, T, Principe, M, Prodi, G, Prokhorov, L, Punturo, M, Puppo, P, Purrer, M, Qi, H, Quetschke, V, Quinonez, P, Raab, F, Raaijmakers, G, Radkins, H, Radulesco, N, Raffai, P, Rafferty, H, Raja, S, Rajan, C, Rajbhandari, B, Rakhmanov, M, Ramirez, K, Ramos-Buades, A, Rana, J, Rao, K, Rapagnani, P, Raymond, V, Razzano, M, Read, J, Regimbau, T, Rei, L, Reid, S, Reitze, D, Rettegno, P, Ricci, F, Richardson, C, Richardson, J, Ricker, P, Riemenschneider, G, Riles, K, Rizzo, M, Robertson, N, Robinet, F, Rocchi, A, Rodriguez-Soto, R, Rolland, L, Rollins, J, Roma, V, Romanelli, M, Romano, R, Romel, C, Romero-Shaw, I, Romie, J, Rose, C, Rose, D, Rose, K, Rosinska, D, Rosofsky, S, Ross, M, Rowan, S, Rowlinson, S, Roy, P, Roy, S, Ruggi, P, Rutins, G, Ryan, K, Sachdev, S, Sadecki, T, Sakellariadou, M, Salafia, O, Salconi, L, Saleem, M, Samajdar, A, Sanchez, E, Sanchez, L, Sanchis-Gual, N, Sanders, J, Santiago, K, Santos, E, Sarin, N, Sassolas, B, Sathyaprakash, B, Sauter, O, Savage, R, Savant, V, Sawant, D, Sayah, S, Schaetzl, D, Schale, P, Scheel, M, Scheuer, J, Schmidt, P, Schnabel, R, Schofield, R, Schonbeck, A, Schreiber, E, Schulte, B, Schutz, B, Schwarm, O, Schwartz, E, Scott, J, Scott, S, Seidel, E, Sellers, D, Sengupta, A, Sennett, N, Sentenac, D, Sequino, V, Sergeev, A, Setyawati, Y, Shaddock, D, Shaffer, T, Shahriar, M, Sharma, A, Sharma, P, Shawhan, P, Shen, H, Shikauchi, M, Shink, R, Shoemaker, D, Shukla, K, Shyamsundar, S, Siellez, K, Sieniawska, M, Sigg, D, Singer, L, Singh, D, Singh, N, Singha, A, Singhal, A, Sintes, A, Sipala, V, Skliris, V, Slagmolen, B, Slaven-Blair, T, Smetana, J, Smith, J, Smith, R, Somala, S, Son, E, Soni, S, Sorazu, B, Sordini, V, Sorrentino, F, Souradeep, T, Sowell, E, Spencer, A, Spera, M, Srivastava, A, Srivastava, V, Staats, K, Stachie, C, Standke, M, Steer, D, Steinke, M, Steinlechner, J, Steinlechner, S, Steinmeyer, D, Stocks, D, Stops, D, Stover, M, Strain, K, Stratta, G, Strunk, A, Sturani, R, Stuver, A, Sudhagar, S, Sudhir, V, Summerscales, T, Sun, L, Sunil, S, Sur, A, Suresh, J, Sutton, P, Swinkels, B, Szczepanczyk, M, Tacca, M, Tait, S, Talbot, C, Tanasijczuk, A, Tanner, D, Tao, D, Tapai, M, Tapia, A, Martin, E, Tasson, J, Taylor, R, Tenorio, R, Terkowski, L, Thirugnanasambandam, M, Thomas, M, Thomas, P, Thompson, J, Thondapu, S, Thorne, K, Thrane, E, Tinsman, C, Saravanan, T, Tiwari, S, Tiwari, V, Toland, K, Tonelli, M, Tornasi, Z, Torres-Forne, A, Torrie, C, Tosta e Melo, I, Toyra, D, Trail, E, Travasso, F, Traylor, G, Tringali, M, Tripathee, A, Trovato, A, Trudeau, R, Tsang, K, Tse, M, Tso, R, Tsukada, L, Tsuna, D, Tsutsui, T, Turconi, M, Ubhi, A, Ueno, K, Ugolini, D, Unnikrishnan, C, Urban, A, Usman, S, Utina, A, Vahlbruch, H, Vajente, G, Valdes, G, Valentini, M, Vallisneri, M, van Bakel, N, van Beuzekom, M, van den Brand, J, Van Den Broeck, C, Vander-Hyde, D, van der Schaaf, L, Van Heijningen, J, van Veggel, A, Vardaro, M, Varma, V, Vass, S, Vasuth, M, Vecchio, A, Vedovato, G, Veitch, J, Veitch, P, Venkateswara, K, Venugopalan, G, Verkindt, D, Veske, D, Vetrano, F, Vicere, A, Viets, A, Vinciguerra, S, Vine, D, Vinet, J, Vitale, S, Vivanco, F, Vo, T, Vocca, H, Vorvick, C, Vyatchanin, S, Wade, A, Wade, L, Wade, M, Walet, R, Walker, M, Wallace, G, Wallace, L, Walsh, S, Wang, J, Wang, S, Wang, W, Wang, Y, Ward, R, Warden, Z, Warner, J, Was, M, Watchi, J, Weaver, B, Wei, L, Weinert, M, Weinstein, A, Weiss, R, Wellmann, F, Wen, L, Wessels, P, Westhouse, J, Wette, K, Whelan, J, Whiting, B, Whittle, C, Wilken, D, Williams, D, Williams, R, Williamson, A, Willis, J, Willke, B, Winkler, W, Wipf, C, Wittel, H, Woan, G, Woehler, J, Wofford, J, Wong, C, Wright, J, Wu, D, Wysocki, D, Xiao, L, Yamamoto, H, Yang, L, Yang, Y, Yang, Z, Yap, M, Yazback, M, Yeeles, D, Yu, H, Yuen, S, Zadrozny, A, Zanolin, M, Zelenova, T, Zendri, J, Zevin, M, Zhang, J, Zhang, L, Zhang, T, Zhao, C, Zhao, G, Zhou, M, Zhou, Z, Zhu, X, Zimmerman, A, Zucker, M, Zweizig, J, IoP (FNWI), Faculty of Science, Gravitation and Astroparticle Physics Amsterdam, Other Research IHEF (IoP, FNWI), Astroparticle Physics (IHEF, IoP, FNWI), Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), The LIGO Scientific Collaboration, The Virgo Collaboration, Arene, M., Becsy, B., Bustillo, J. C., Diaz, J. C., Castaneda, J., Cavaglia, M., Cerda-Duran, P., Cieslar, M., Cordero-Carrion, I., Canton, T. D., Dalya, G., D'Angelo, B., D'Antonio, S., Deleglise, S., D'Emilio, V., Diaz, M. C., D'Urso, D., Fronze, G., Garcia-Quiros, C., Ghosh, A., Gonzalez, G., Guixe, G., Hubner, M. T., Isac, J. -M., Kefelian, F., Kim, C., Krolak, A., Kumar, R., Luck, H., Hernandez, I. M., Magana-Sandoval, F., Marka, S., Marka, Z., Villa, E. M., Mukherjee, A., Muniz, E. A., O'Brien, B. D., Oram, R. J., O'Reilly, B., O'Shaughnessy, R., Perigois, C., Perries, S., Pinto, I., Purrer, M., Rana, J., Rosinska, D., Roy, S., Schonbeck, A., Szczepanczyk, M. J., Tapai, M., Martin, E. N. T. S., Torres-Forne, A., Toyra, D., Vasuth, M., Vicere, A., Vivanco, F. H., Wessels, P., Yu, H., Zadrozny, A. K., and Zadrozny, A.

Subjects
Technology, Gravitational Waves, Open Data, O1, O2, LIGO, Virgo, Astronomy, Strain measurement, Gravitational Wave, open data, Data representation and management, Gravitational Waves, GWOSC, Scientific databases, gravitational waves, 01 natural sciences, General Relativity and Quantum Cosmology, Software, Documentation, DESIGN, Open Data, Computer software, Data products, LIGO, QC, 12-AXIS VIBRATION ISOLATION, media_common, Settore FIS/01, 0303 health sciences, Gravitational effects, BINARY MERGERS, Computer Science Applications, Open data, [PHYS.GRQC]Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], Open science, Astrophysics - Instrumentation and Methods for Astrophysics, data analysis method, gr-qc, media_common.quotation_subject, Real-time computing, FOS: Physical sciences, O2, PUBLIC ADVANCED LIGO, General Relativity and Quantum Cosmology (gr-qc), Gravity waves, programming, O1, 03 medical and health sciences, QA76.75-76.765, Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik, SDG 17 - Partnerships for the Goals, GWOSC, Scientific databases, Data representation and management, Gravitational Waves, 0103 physical sciences, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], 010306 general physics, GRAVITATIONAL-WAVE CATALOG, Instrumentation and Methods for Astrophysics (astro-ph.IM), STFC, Astrophysique, 030304 developmental biology, Science & Technology, business.industry, Gravitational wave, Virgo, gravitational radiation, RCUK, Strain data, Data-quality information, Computer Science, Software Engineering, gravitational radiation detector, detector: sensitivity, Scientific database, monitoring, VIRGO, Sky, gravitational radiation: emission, Computer Science, ddc:004, business, astro-ph.IM
Abstract

Abbot, Rich, et al. (Virgo and MAGIC Collaboration), Advanced LIGO and Advanced Virgo are monitoring the sky and collecting gravitational-wave strain data with sufficient sensitivity to detect signals routinely. In this paper we describe the data recorded by these instruments during their first and second observing runs. The main data products are gravitational-wave strain time series sampled at 16384 Hz. The datasets that include this strain measurement can be freely accessed through the Gravitational Wave Open Science Center at http://gw-openscience.org, together with data-quality information essential for the analysis of LIGO and Virgo data, documentation, tutorials, and supporting software., The authors gratefully acknowledge the support of the United States National Science Foundation (NSF) for the construction and operation of the LIGO Laboratory and Advanced LIGO as well as the Science and Technology Facilities Council (STFC) of the United Kingdom, the Max-Planck-Society (MPS), and the State of Niedersachsen/Germany for support of the construction of Advanced LIGO and construction and operation of the GEO600 detector. Additional support for Advanced LIGO was provided by the Australian Research Council. The authors gratefully acknowledge the Italian Istituto Nazionale di Fisica Nucleare (INFN), the French Centre National de la Recherche Scientifique (CNRS) and the Foundation for Fundamental Research on Matter supported by the Netherlands Organisation for Scientific Research, for the construction and operation of the Virgo detector and the creation and support of the EGO consortium. The authors also gratefully acknowledge research support from these agencies as well as by the Council of Scientific and Industrial Research of India, the Department of Science and Technology, India, the Science & Engineering Research Board (SERB), India, the Ministry of Human Resource Development, India, the Spanish Agencia Estatal de Investigación, the Vicepresidència i Conselleria d’Innovació, Recerca i Turisme and the Conselleria d’Educació i Universitat del Govern de les Illes Balears, the Conselleria d’Educació, Investigació, Cultura i Esport de la Generalitat Valenciana, the National Science Centre of Poland, the Swiss National Science Foundation (SNSF), the Russian Foundation for Basic Research, the Russian Science Foundation, the European Commission, the European Regional Development Funds (ERDF), the Royal Society, the Scottish Funding Council, the Scottish Universities Physics Alliance, the Hungarian Scientific Research Fund (OTKA), the Lyon Institute of Origins (LIO), the Paris Île-de-France Region, the National Research, Development and Innovation Office Hungary (NKFIH), the National Research Foundation of Korea, Industry Canada and the Province of Ontario through the Ministry of Economic Development and Innovation, the Natural Science and Engineering Research Council Canada, the Canadian Institute for Advanced Research, the Brazilian Ministry of Science, Technology, Innovations, and Communications, the International Center for Theoretical Physics South American Institute for Fundamental Research (ICTP-SAIFR), the Research Grants Council of Hong Kong, the National Natural Science Foundation of China (NSFC), the Leverhulme Trust, the Research Corporation, the Ministry of Science and Technology (MOST), Taiwan and the Kavli Foundation. The authors gratefully acknowledge the support of the NSF, STFC, INFN and CNRS for provision of computational resources.

Published
2021

16. Measurement of moisture-dependent ion diffusion constants in wood cell wall layers using time-lapse micro X-ray fluorescence microscopy

Author

Leandro Passarini, David Vine, Christopher G. Hunt, Daniel J. Yelle, Peter N. Ciesielski, Stefan Vogt, Sophie-Charlotte Gleber, Joseph E. Jakes, Samuel L. Zelinka, and Charles R. Frihart

Subjects
0301 basic medicine, Renewable energy, Materials science, Polymers, lcsh:Medicine, Lignocellulosic biomass, Biomass, 02 engineering and technology, Conductivity, Article, 03 medical and health sciences, Ionic conductivity, Diffusion (business), lcsh:Science, Multidisciplinary, Aqueous solution, Polymer characterization, lcsh:R, food and beverages, 021001 nanoscience & nanotechnology, Fick's laws of diffusion, 030104 developmental biology, Diffusion process, Chemical engineering, lcsh:Q, Plant sciences, 0210 nano-technology
Abstract

Our future bioeconomy depends on increased utilization of renewable lignocellulosic biomass. Controlling the diffusion of chemicals, such as inorganic ions, within secondary plant cell walls is central to many biomass applications. However, insufficient understanding of intra-cell-wall diffusion within secondary plant cell walls is hindering the advancement of many lignocellulosic biomass applications. In this work, X-ray fluorescence microscopy was used to measure diffusion constants of K+, Cu2+, and Cl− diffusing through loblolly pine (Pinus taeda) cell wall layers under 70%, 75%, or 80% relative humidity (RH). Results revealed that diffusion constants increased with RH, the larger Cu2+ diffused more slowly than the K+, and the Cl− diffusion constant was the same as that for the counter cation, indicating cations and anions diffused together to maintain charge neutrality. Comparison with electrical conductivity measurements showed that conductivity is being controlled by ion mobility over these RH. The results further support that intra-cell-wall diffusion of inorganic ions is a Fickian diffusion process occurring through rubbery amorphous polysaccharides, which contradicts previous assertions that intra-cell-wall diffusion is an aqueous process occurring through water pathways. Researchers can now utilize polymer science approaches to engineer the molecular architecture of lignocellulosic biomass to optimize properties for specific end uses.

Published
2020

17. Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography

Author

Sang Soo Kim, Ian McNulty, Xianghui Xiao, Chonghang Zhao, M. A. Pfeifer, Garth J. Williams, Yu-chen Karen Chen-Wiegart, and David Vine

Subjects
Materials science, Renewable Energy, Sustainability and the Environment, Nanoporous, business.industry, Mechanical Engineering, X-ray, Energy Engineering and Power Technology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Three dimensional morphology, Optics, Mechanics of Materials, Tomography, 0210 nano-technology, business
Abstract

Nanoporous metals fabricated by dealloying have a unique bi-continuous, sponge-like porous structure with ultra-high surface area. The unique properties of these materials, especially nanoporous gold, have numerous potential applications in sensors and actuators and in energy-related applications such as catalytic materials, super-capacitors, and battery supports. The degree of porosity and size of the metal ligaments are critical parameters that determine many properties and thus govern the functionalities of nanoporous metals in many applications including energy storage and conversion. We used Fresnel coherent diffractive imaging combined with tomographic reconstruction to quantify the nanoscale three-dimensional spatial distribution and homogeneity of the porosity and ligament size within a bulk sample of nanoporous gold. The average porosity and its standard deviation along the axial direction through the sample were determined, as well as the characteristic feature size and its standard deviation. The result shows that free corrosion is an effective way to create homogeneous nanoporous metals with sample sizes on the order of 1 µm.

Published
2020

18. Spatial distribution of metals within the liver acinus and their perturbation by PCB126

Author

David Vine, Larry W. Robertson, William D. Klaren, and Stefan Vogt

Subjects
0301 basic medicine, Portal triad, Iron, Health, Toxicology and Mutagenesis, chemistry.chemical_element, Zinc, Article, Rats, Sprague-Dawley, 03 medical and health sciences, chemistry.chemical_compound, Liver Acinus, Extracellular, medicine, Fluorescence microscope, Animals, Homeostasis, Environmental Chemistry, Micronutrients, General Medicine, Polychlorinated Biphenyls, Pollution, Rats, Trace Elements, Staining, 030104 developmental biology, medicine.anatomical_structure, Liver, chemistry, Metals, Environmental chemistry, Biophysics, Liver function, Copper, Toxicant
Abstract

Animal studies show that exposure to the environmental pollutant 3,3’,4,4’,5-pentachlorobiphenyl (PCB126) causes alterations in hepatic metals as measured in acid-digested volume adjusted tissue. These studies lack the detail of the spatial distribution within the liver. Here we use X-ray fluorescence microscopy (XFM) to assess the spatial distribution of trace elements within liver tissue. Liver samples from male Sprague-Dawley rats, treated either with vehicle or PCB126, were formalin fixed and paraffin embedded. Serial sections were prepared for traditional H&E staining or placed on silicon nitride windows for XFM. With XFM, metal gradients between the portal triad and the central vein were seen, especially with copper and iron. These gradients change with exposure to PCB126, even reverse. This is the first report of how micronutrients vary spatially within the liver, and how they change in response to toxicant exposure. In addition, high concentrations of zinc clusters were discovered in the extracellular space. PCB126-treatment did not affect their presence, but did alter their elemental makeup suggesting a more general biological function. Further work is needed to properly evaluate the gradients and their alterations as well as classify the zinc clusters to determine their role in liver function and zinc homeostasis.

Published
2017

19. Physical origins of current and temperature controlled negative differential resistances in NbO2

Author

Xiaopeng Huang, David Vine, John Paul Strachan, Ziwen Wang, Yoshio Nishi, R. Stanley Williams, Suhas Kumar, Niru Kumari, Noraica Davila, A. L. David Kilcoyne, and Kate J. Norris

Subjects
Current (mathematics), Materials science, Science, General Physics and Astronomy, Nanotechnology, 02 engineering and technology, Memristor, 01 natural sciences, Instability, General Biochemistry, Genetics and Molecular Biology, law.invention, Thermal conductivity, law, 0103 physical sciences, Thermal, lcsh:Science, 010302 applied physics, Multidisciplinary, Condensed matter physics, General Chemistry, 021001 nanoscience & nanotechnology, Mott transition, Neuromorphic engineering, lcsh:Q, 0210 nano-technology, Differential (mathematics)
Abstract

Negative differential resistance behavior in oxide memristors, especially those using NbO2, is gaining renewed interest because of its potential utility in neuromorphic computing. However, there has been a decade-long controversy over whether the negative differential resistance is caused by a relatively low-temperature non-linear transport mechanism or a high-temperature Mott transition. Resolving this issue will enable consistent and robust predictive modeling of this phenomenon for different applications. Here we examine NbO2 memristors that exhibit both a current-controlled and a temperature-controlled negative differential resistance. Through thermal and chemical spectromicroscopy and numerical simulations, we confirm that the former is caused by a ~400 K non-linear-transport-driven instability and the latter is caused by the ~1000 K Mott metal-insulator transition, for which the thermal conductance counter-intuitively decreases in the metallic state relative to the insulating state. The development of future computation devices will be aided by a better understanding of the physics underlying material behaviors. Using thermoreflectance and spatially resolved X-ray microscopy, Kumar et al. elucidate the origin of two types of negative differential resistance in NbO2 memristors.

Published
2017

21. Ptychographic imaging and micromagnetic modeling of thermal melting of nanoscale magnetic domains in antidot lattices

Author

Gisela Schütz, Tolek Tyliszczak, Eberhard Goering, David A. Shapiro, Felix Haering, Hermann Stoll, Nick Träger, Markus Weigand, Joachim Gräfe, David Vine, Ulf Wiedwald, Ulrich Nowak, Georg Dieterle, Iuliia Bykova, Paul J. Ziemann, and Maxim Skripnik

Subjects
010302 applied physics, Materials science, Condensed matter physics, Magnetic domain, business.industry, General Physics and Astronomy, 02 engineering and technology, Physik (inkl. Astronomie), 021001 nanoscience & nanotechnology, 01 natural sciences, Ptychography, lcsh:QC1-999, Lattice (order), 0103 physical sciences, Computer data storage, Patterned media, Thermal, Microscopy, ddc:530, 0210 nano-technology, business, Nanoscopic scale, lcsh:Physics
Abstract

CA extern Antidot lattices are potential candidates to act as bit patterned media for data storage as they are able to trap nanoscale magnetic domains between two adjacent holes. Here, we demonstrate the combination of micromagnetic modeling and x-ray microscopy. Detailed simulation of these systems can only be achieved by micromagnetic modeling that takes thermal effects into account. For this purpose, a Landau-Lifshitz-Bloch approach is used here. The calculated melting of magnetic domains within the antidot lattice is reproduced experimentally by x-ray microscopy. Furthermore, we compare conventional scanning transmission x-ray microscopy with resolution enhanced ptychography. Hence, we achieve a resolution of 13 nm. The results demonstrate that ptychographic imaging can also recover magnetic contrast in the presence of a strong topological variation and is generally applicable toward magnetic samples requiring ultimate resolution. © 2020 Author(s).

Published
2020

22. Preserving elemental content in adherent mammalian cells for analysis by synchrotron‐based x‐ray fluorescence microscopy

Author

David Vine, Stefan Vogt, Si Chen, Gayle E. Woloschak, Chris Jacobsen, Sophie Charlotte Gleber, Qiaoling Jin, Tatjana Paunesku, Lydia Finney, and Barry Lai

Subjects
0301 basic medicine, Tissue Fixation, Histology, Analytical chemistry, X-ray fluorescence, x‐ray microanalysis, Pathology and Forensic Medicine, Mice, 03 medical and health sciences, chemistry.chemical_compound, Freeze-drying, Microscopy, Fluorescence microscope, Animals, Sample preparation, Paraformaldehyde, cryomicroscopy, Fixative, Spectrometry, X-Ray Emission, Original Articles, Fibroblasts, Biological, Trace Elements, x‐ray microscopy, 030104 developmental biology, Microscopy, Fluorescence, chemistry, NIH 3T3 Cells, Biophysics, Original Article, Glutaraldehyde, specimen preparation
Abstract

Summary Trace metals play important roles in biological function, and x-ray fluorescence microscopy (XFM) provides a way to quantitatively image their distribution within cells. The faithfulness of these measurements is dependent on proper sample preparation. Using mouse embryonic fibroblast NIH/3T3 cells as an example, we compare various approaches to the preparation of adherent mammalian cells for XFM imaging under ambient temperature. Direct side-by-side comparison shows that plunge-freezing-based cryoimmobilization provides more faithful preservation than conventional chemical fixation for most biologically important elements including P, S, Cl, K, Fe, Cu, Zn and possibly Ca in adherent mammalian cells. Although cells rinsed with fresh media had a great deal of extracellular background signal for Cl and Ca, this approach maintained cells at the best possible physiological status before rapid freezing and it does not interfere with XFM analysis of other elements. If chemical fixation has to be chosen, the combination of 3% paraformaldehyde and 1.5 % glutaraldehyde preserves S, Fe, Cu and Zn better than either fixative alone. When chemically fixed cells were subjected to a variety of dehydration processes, air drying was proved to be more suitable than other drying methods such as graded ethanol dehydration and freeze drying. This first detailed comparison for x-ray fluorescence microscopy shows how detailed quantitative conclusions can be affected by the choice of cell preparation method.

Published
2016

23. Simultaneous X-ray fluorescence and scanning X-ray diffraction microscopy at the Australian Synchrotron XFM beamline

Author

David Vine, Martin D. de Jonge, Brian Abbey, Michael W. M. Jones, R. Kirkham, Grant van Riessen, Nader Afshar, Stephen T. Mudie, Bo Chen, Nicholas W. Phillips, Youssef S. G. Nashed, and Eugeniu Balaur

Subjects
Diffraction, Nuclear and High Energy Physics, Radiation, Materials science, Analytical chemistry, X-ray fluorescence, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Ptychography, Beamline, 0103 physical sciences, Microscopy, X-ray crystallography, Fluorescence microscope, 010306 general physics, 0210 nano-technology, Australian Synchrotron, Instrumentation
Abstract

Owing to its extreme sensitivity, quantitative mapping of elemental distributionsviaX-ray fluorescence microscopy (XFM) has become a key microanalytical technique. The recent realisation of scanning X-ray diffraction microscopy (SXDM) meanwhile provides an avenue for quantitative super-resolved ultra-structural visualization. The similarity of their experimental geometries indicates excellent prospects for simultaneous acquisition. Here, in both step- and fly-scanning modes, robust, simultaneous XFM-SXDM is demonstrated.

Published
2016

25. Quantitative analysis of a micro array anode structured target for hard x-ray grating interferometry

Author

Sylvia Jia Yun Lewis, Ge Wang, Guibin Zan, David Vine, Qiuping Wang, and Wenbing Yun

Subjects
Materials science, Radiological and Ultrasound Technology, business.industry, X-Rays, Astrophysics::High Energy Astrophysical Phenomena, Monte Carlo method, Phase-contrast imaging, Field of view, Models, Theoretical, Grating, Article, Anode, Radiography, Interferometry, Optics, Image Processing, Computer-Assisted, Cathode ray, Humans, Radiology, Nuclear Medicine and imaging, Absorption (electromagnetic radiation), business, Electrodes, Monte Carlo Method
Abstract

Talbot-Lau interferometry (TLI) provides additional contrast modes for x-ray imaging that are complementary to conventional absorption radiography. TLI is particularly interesting because it is one of the few practical methods for realizing phase contrast with x-rays that is compatible with large-spot high power x-ray sources. A novel micro array anode structured target (MAAST) x-ray source offers several advantages for TLI over the conventional combination of an extended x-ray source coupled with an absorption grating including higher flux and larger field of view, and these advantages become more pronounced for x-ray energies in excess of 30 keV. A Monte Carlo simulation was performed to determine the optimal parameters for a MAAST source for use with TLI. It was found that the both spatial distribution of x-ray production and the number of x-ray produced in the MAAST have a strong dependence on the incidence angle of the electron beam.

Published
2020

26. Energy Tunability in Laboratory 3D Nano-XRM

Author

Wenbing Yun, S. H. Lau, Jeff Gelb, Sylvia Jia Yun Lewis, David Vine, and Trevor W. Lancon

Subjects
Materials science, Nano, Nanotechnology, Instrumentation, Energy (signal processing)
Published
2019

28. Coupling between oxygen redox and cation migration explains unusual electrochemistry in lithium-rich layered oxides

Author

Michael F. Toney, Kevin H. Stone, Jin-Hwan Park, Kipil Lim, Apurva Mehta, David Prendergast, Seok-Kwang Doo, Sungjin Ahn, William E. Gent, Wanli Yang, Stefano Ermon, David Kilcoyne, Tolek Tyliszczak, Qinghao Li, Yufeng Liang, Jihyun Hong, Taylor Barnes, Yiyang Li, Jay-Hyok Song, Mitchell McIntire, William C. Chueh, and David Vine

Subjects
Science, Oxide, General Physics and Astronomy, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, Photochemistry, Electrochemistry, 01 natural sciences, Oxygen, Redox, General Biochemistry, Genetics and Molecular Biology, Article, Ion, chemistry.chemical_compound, Affordable and Clean Energy, Transition metal, lcsh:Science, Multidisciplinary, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, chemistry, Electrode, Lithium, lcsh:Q, 0210 nano-technology
Abstract

Lithium-rich layered transition metal oxide positive electrodes offer access to anion redox at high potentials, thereby promising high energy densities for lithium-ion batteries. However, anion redox is also associated with several unfavorable electrochemical properties, such as open-circuit voltage hysteresis. Here we reveal that in Li1.17–xNi0.21Co0.08Mn0.54O2, these properties arise from a strong coupling between anion redox and cation migration. We combine various X-ray spectroscopic, microscopic, and structural probes to show that partially reversible transition metal migration decreases the potential of the bulk oxygen redox couple by > 1 V, leading to a reordering in the anionic and cationic redox potentials during cycling. First principles calculations show that this is due to the drastic change in the local oxygen coordination environments associated with the transition metal migration. We propose that this mechanism is involved in stabilizing the oxygen redox couple, which we observe spectroscopically to persist for 500 charge/discharge cycles., Lithium ion battery electrodes employing anion redox exhibit high energy densities but suffer from poor cyclability. Here the authors reveal that the voltage of anion redox is strongly affected by structural changes that occur during battery cycling, explaining its unique electrochemical properties.

Published
2017

29. Coatings and surface treatments for enhanced performance suspensions for future gravitational wave detectors

Author

David Vine, Stuart Reid, Shigeng Song, A. Cumming, Desmond Gibson, I. W. Martin, J. H. Hough, Sheila Rowan, Gavin Wallace, G. D. Hammond, R. Birney, Paul Campsie, and Curtis Talbot

Subjects
Physics, education.field_of_study, Physics and Astronomy (miscellaneous), Silicon, business.industry, Population, chemistry.chemical_element, 02 engineering and technology, 021001 nanoscience & nanotechnology, 01 natural sciences, Monocrystalline silicon, Brittleness, Optics, chemistry, Flexural strength, 0103 physical sciences, Ultimate tensile strength, Crystalline silicon, Composite material, 010306 general physics, 0210 nano-technology, business, education, Suspension (vehicle), QC
Abstract

Further improvements in the low frequency sensitivity of gravitational wave detectors are important for increasing the observable population of astrophysical sources, such as intermediate mass compact black hole binary systems. Improvements in the lower stage mirror and suspension systems will set challenging targets for the required thermal noise performance of the cantilever blade springs, which provide vertical softness and, thus, isolation to the mirror suspension stack. This is required due to the coupling between the vertical and horizontal axes due to the curvature of the Earth. This can be achieved through use of high mechanical Q materials, which are compatible with cryogenic cooling, such as crystalline silicon. However, such materials are brittle, posing further challenges for assembly/jointing and, more generally, for long-term robustness. Here, we report on experimental studies of the breaking strength of silicon at room temperature, via both tensile and 4-point flexural testing; and on the effects of various surface treatments and coatings on durability and strength. Single- and multi-layer DLC (diamond-like carbon) coatings, together with magnetron-sputtered silica and thermally-grown silica, are investigated, as are the effects of substrate preparation and argon plasma pre-treatment. Application of single- or multi-layer DLC coatings can significantly improve the failure stress of silicon flexures, in addition to improved robustness for handling (assessed through abrasion tests). Improvements of up to 80% in tensile strength, a twofold increase in flexural strength, in addition to a 6.4 times reduction in the vertical thermal noise contribution of the suspension stack at 10 Hz are reported (compared to current Advanced LIGO design). The use of silicon blade springs would also significantly reduce potential 'crackling noise' associated with the underlying discrete events associated with plastic deformation in loaded flexures.

Published
2017

30. Simultaneous cryo X-ray ptychographic and fluorescence microscopy of green algae

Author

Tom Peterka, Qiaoling Jin, Chris Jacobsen, Robert Ross, Youssef S. G. Nashed, Stefan Vogt, David Vine, Si Chen, Nicholas W. Phillips, and Junjing Deng

Subjects
Multidisciplinary, Materials science, business.industry, Resolution (electron density), Trace element, Phase (waves), Fluorescence, Ptychography, law.invention, Lens (optics), Imaging, Three-Dimensional, Optics, Microscopy, Fluorescence, X-Ray Diffraction, Chlorophyta, law, Physical Sciences, Freezing, Fluorescence microscope, business, Visible spectrum
Abstract

Trace metals play important roles in normal and in disease-causing biological functions. X-ray fluorescence microscopy reveals trace elements with no dependence on binding affinities (unlike with visible light fluorophores) and with improved sensitivity relative to electron probes. However, X-ray fluorescence is not very sensitive for showing the light elements that comprise the majority of cellular material. Here we show that X-ray ptychography can be combined with fluorescence to image both cellular structure and trace element distribution in frozen-hydrated cells at cryogenic temperatures, with high structural and chemical fidelity. Ptychographic reconstruction algorithms deliver phase and absorption contrast images at a resolution beyond that of the illuminating lens or beam size. Using 5.2-keV X-rays, we have obtained sub-30-nm resolution structural images and ∼90-nm-resolution fluorescence images of several elements in frozen-hydrated green algae. This combined approach offers a way to study the role of trace elements in their structural context.

Published
2015

31. In situ strain evolution during a disconnection event in a battery nanoparticle

Author

Andrej Singer, Oleg Shpyrko, Jesse N. Clark, Ying Shirley Meng, Andrew Ulvestad, David Vine, Ross Harder, and Hyung-Man Cho

Subjects
Battery (electricity), General Physics and Astronomy, Nanoparticle, chemistry.chemical_element, Nanotechnology, Electrolyte, Cathode, Energy storage, Ion, law.invention, chemistry, law, ddc:540, Particle, Lithium, Physical and Theoretical Chemistry
Abstract

© the Owner Societies 2015.Lithium ion batteries are the dominant form of energy storage in mobile devices, increasingly employed in transportation, and likely candidates for renewable energy storage and integration into the electrical grid. To fulfil their powerful potential, electrodes with increased capacity, faster charge rates, and longer cycle life must be developed. Understanding the mechanics and chemistry of individual nanoparticles under in situ conditions is a crucial step to improving performance and mitigating damage. Here we reveal three-dimensional strain evolution within a single nanoparticle of a promising high voltage cathode material, LiNi0.5Mn1.5O4, under in situ conditions. The particle becomes disconnected during the second charging cycle. This is attributed to the formation of a cathode electrolyte interphase layer with slow ionic conduction. The three-dimensional strain pattern within the particle is independent of cell voltage after disconnection, indicating that the particle is unable to redistribute lithium within its volume or to its neighbours. Understanding the disconnection process at the single particle level and the equilibrium or non-equilibrium state of nanoparticles is essential to improving performance of current and future electrochemical energy storage systems.

Published
2015

32. X-ray ptychographic and fluorescence microscopy of frozen-hydrated cells using continuous scanning

Author

Si Chen, Junjing Deng, Tom Peterka, Qiaoling Jin, David Vine, Youssef S. G. Nashed, Stefan Vogt, and Chris Jacobsen

Subjects
0301 basic medicine, Fluorescence-lifetime imaging microscopy, Materials science, Science, Image Processing, Analytical chemistry, Bioengineering, Article, Fluorescence, law.invention, 03 medical and health sciences, Computer-Assisted, law, Freezing, Microscopy, Image Processing, Computer-Assisted, Radiation damage, Fluorescence microscope, Multidisciplinary, X-Rays, Chlamydomonas, Resolution (electron density), Scanning confocal electron microscopy, X-ray, Water, Other Physical Sciences, 030104 developmental biology, Microscopy, Fluorescence, Medicine, Biochemistry and Cell Biology, Generic health relevance, Electron microscope
Abstract

X-ray microscopy can be used to image whole, unsectioned cells in their native hydrated state. It complements the higher resolution of electron microscopy for submicrometer thick specimens, and the molecule-specific imaging capabilites of fluorescence light microscopy. We describe here the first use of fast, continuous x-ray scanning of frozen hydrated cells for simultaneous sub-20 nm resolution ptychographic transmission imaging with high contrast, and sub-100 nm resolution deconvolved x-ray fluorescence imaging of diffusible and bound ions at native concentrations, without the need to add specific labels. By working with cells that have been rapidly frozen without the use of chemical fixatives, and imaging them under cryogenic conditions, we are able to obtain images with well preserved structural and chemical composition, and sufficient stability against radiation damage to allow for multiple images to be obtained with no observable change.

Published
2017

33. Oxygen migration during resistance switching and failure of hafnium oxide memristors

Author

Noraica Davila, John Paul Strachan, Suhas Kumar, David Vine, Ziwen Wang, Xiaopeng Huang, Niru Kumari, Yoshio Nishi, R. Stanley Williams, and A. L. David Kilcoyne

Subjects
Technology, Materials science, Physics and Astronomy (miscellaneous), Orders of magnitude (temperature), Oxide, chemistry.chemical_element, FOS: Physical sciences, 02 engineering and technology, Memristor, 01 natural sciences, Oxygen, law.invention, Hafnium oxide, chemistry.chemical_compound, Engineering, law, 0103 physical sciences, Applied Physics, 010302 applied physics, Condensed Matter - Materials Science, business.industry, Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, cond-mat.mtrl-sci, 3. Good health, chemistry, Physical Sciences, Optoelectronics, 0210 nano-technology, business
Abstract

While the recent establishment of the role of thermophoresis/diffusion-driven oxygen migration during resistance switching in metal oxide memristors provided critical insights required for memristor modeling, extended investigations of the role of oxygen migration during ageing and failure remain to be detailed. Such detailing will enable failure-tolerant design, which can lead to enhanced performance of memristor-based next-generation storage-class memory. Here we directly observed lateral oxygen migration using in-situ synchrotron x-ray absorption spectromicroscopy of HfOx memristors during initial resistance switching, wear over millions of switching cycles, and eventual failure, through which we determined potential physical causes of failure. Using this information, we reengineered devices to mitigate three failure mechanisms, and demonstrated an improvement in endurance of about three orders of magnitude., Comment: 5 pages, 4 figures

Published
2017

34. Synchrotron-based X-ray fluorescence microscopy enables multiscale spatial visualization of ions involved in fungal lignocellulose deconstruction

Author

Samuel L. Zelinka, Sophie-Charlotte Gleber, Joseph E. Jakes, Barry Goodell, Grant T. Kirker, Jody Jellison, David Vine, Omar Uyarte, Si Chen, Stefan Vogt, Young-Pyo Hong, and Lydia Finney

Subjects
0301 basic medicine, Hypha, X-ray fluorescence, Lignin, Article, Ion, law.invention, Cell wall, 03 medical and health sciences, law, Microscopy, Botany, Fluorescence microscope, Ions, 040101 forestry, Multidisciplinary, biology, Chemistry, X-Rays, fungi, Fungi, 04 agricultural and veterinary sciences, biology.organism_classification, Wood, Synchrotron, 030104 developmental biology, Microscopy, Fluorescence, Biophysics, 0401 agriculture, forestry, and fisheries, Synchrotrons, Serpula lacrymans
Abstract

The role of ions in the fungal decay process of lignocellulose biomaterials, and more broadly fungal metabolism, has implications for diverse research disciplines ranging from plant pathology and forest ecology, to carbon sequestration. Despite the importance of ions in fungal decay mechanisms, the spatial distribution and quantification of ions in lignocellulosic cell walls and fungal hyphae during decay is not known. Here we employ synchrotron-based X-ray fluorescence microscopy (XFM) to map and quantify physiologically relevant ions, such as K, Ca, Mn, Fe, and Zn, in wood being decayed by the model brown rot fungus Serpula lacrymans. Two-dimensional XFM maps were obtained to study the ion spatial distributions from mm to submicron length scales in wood, fungal hyphae with the dried extracellular matrix (ECM) from the fungus, and Ca oxalate crystals. Three-dimensional ion volume reconstructions were also acquired of wood cell walls and hyphae with ECM. Results show that the fungus actively transports some ions, such as Fe, into the wood and controls the distribution of ions at both the bulk wood and cell wall length scales. These measurements provide new insights into the movement of ions during decay and illustrate how synchrotron-based XFM is uniquely suited study these ions.

Published
2017

35. Scientific data exchange: a schema for HDF5-based storage of raw and analyzed data

Author

Suresh Narayanan, Dilworth Y. Parkinson, Faisal Khan, Matthew Newville, Stefan Vogt, Young-Pyo Hong, Sophie-Charlotte Gleber, Tony Lanzirotti, David Vine, Mark L. Rivers, Nicholas Schwarz, Chris Jacobsen, Federica Marone, Yue Sun, Dogˇa Gürsoy, Francesco De Carlo, University of Zurich, and De Carlo, Francesco

Subjects
Nuclear and High Energy Physics, Radiation, business.industry, Computer science, 3105 Instrumentation, 610 Medicine & health, computer.file_format, Hierarchical Data Format, computer.software_genre, 170 Ethics, 3108 Radiation, Data exchange, Schema (psychology), Computer data storage, 10237 Institute of Biomedical Engineering, Data mining, 3106 Nuclear and High Energy Physics, Analysis tools, business, Instrumentation, computer, Fluorescence tomography
Abstract

Data Exchange is a simple data model designed to interface, or `exchange', data among different instruments, and to enable sharing of data analysis tools. Data Exchange focuses on technique rather than instrument descriptions, and on provenance tracking of analysis steps and results. In this paper the successful application of the Data Exchange model to a variety of X-ray techniques, including tomography, fluorescence spectroscopy, fluorescence tomography and photon correlation spectroscopy, is described.

Published
2014

36. P-NEXFS analysis of aerosol phosphorus delivered to the Mediterranean Sea

Author

Michelle Oakes, Ellery D. Ingall, Jay A. Brandes, Kaliopi Violaki, Julia M. Diaz, Anna Avila, Amelia F. Longo, L. King, Athanasios Nenes, David Vine, Claudia R. Benitez-Nelson, Nikolaos Mihalopoulos, and Ian McNulty

Subjects
Mediterranean climate, Ecology, Phosphorus, Organic phosphorus, chemistry.chemical_element, respiratory system, complex mixtures, Major and trace element geochemistry, Nutrients and nutrient cycling, Aerosol, Geophysics, Nutrient, Mediterranean sea, Aerosol deposition, chemistry, Productivity (ecology), Environmental chemistry, Composition of aerosols and dust particles, General Earth and Planetary Sciences, Environmental science, Aerosols and particles
Abstract

Biological productivity in many ocean regions is controlled by the availability of the nutrient phosphorus. In the Mediterranean Sea, aerosol deposition is a key source of phosphorus and understanding its composition is critical for determining its potential bioavailability. Aerosol phosphorus was investigated in European and North African air masses using phosphorus near-edge X-ray fluorescence spectroscopy (P-NEXFS). These air masses are the main source of aerosol deposition to the Mediterranean Sea. We show that European aerosols are a significant source of soluble phosphorus to the Mediterranean Sea. European aerosols deliver on average 3.5 times more soluble phosphorus than North African aerosols and furthermore are dominated by organic phosphorus compounds. The ultimate source of organic phosphorus does not stem from common primary emission sources. Rather, phosphorus associated with bacteria best explains the presence of organic phosphorus in Mediterranean aerosols.

Published
2014

37. Conduction Channel Formation and Dissolution Due to Oxygen Thermophoresis/Diffusion in Hafnium Oxide Memristors

Author

John Paul Strachan, Xiaopeng Huang, A. L. David Kilcoyne, David Vine, Ziwen Wang, Noraica Davila, Niru Kumari, Suhas Kumar, Yoshio Nishi, and R. Stanley Williams

Subjects
Diffusion, General Physics and Astronomy, chemistry.chemical_element, FOS: Physical sciences, Nanotechnology, 02 engineering and technology, Memristor, 01 natural sciences, Oxygen, Thermophoresis, law.invention, law, 0103 physical sciences, General Materials Science, Nanoscience & Nanotechnology, Nanoscopic scale, Dissolution, 010302 applied physics, Condensed Matter - Materials Science, Resistive touchscreen, Chemistry, General Engineering, Materials Science (cond-mat.mtrl-sci), operating mechanism, thermophoresis, 021001 nanoscience & nanotechnology, oxygen migration, cond-mat.mtrl-sci, Resistive random-access memory, memristors, filament, Chemical physics, 0210 nano-technology
Abstract

Transition metal oxide memristors, or resistive random-access memory (RRAM) switches, are under intense development for storage-class memory because of their favorable operating power, endurance, speed, and density. Their commercial deployment critically depends on predictive compact models based on understanding nanoscale physico-chemical forces, which remains elusive and controversial owing to the difficulties in directly observing atomic motions during resistive switching, Here, using scanning transmission synchrotron x-ray spectromicroscopy to study in-situ switching of hafnium oxide memristors, we directly observed the formation of a localized oxygen-deficiency-derived conductive channel surrounded by a low-conductivity ring of excess oxygen. Subsequent thermal annealing homogenized the segregated oxygen, resetting the cells towards their as-grown resistance state. We show that the formation and dissolution of the conduction channel are successfully modeled by radial thermophoresis and Fick diffusion of oxygen atoms driven by Joule heating. This confirmation and quantification of two opposing nanoscale radial forces that affect bipolar memristor switching are important components for any future physics-based compact model for the electronic switching of these devices., Comment: 6 pages and 4 figures

Published
2016

38. Spatially uniform resistance switching of low current, high endurance titanium-niobium-oxide memristors

Author

Noraica Davila, Xiaopeng Huang, John Paul Strachan, David Vine, Yoshio Nishi, R. Stanley Williams, Ziwen Wang, A. L. David Kilcoyne, and Suhas Kumar

Subjects
Technology, Materials science, FOS: Physical sciences, 02 engineering and technology, Memristor, 01 natural sciences, law.invention, law, 0103 physical sciences, Niobium oxide, General Materials Science, Nanoscience & Nanotechnology, Nanoscopic scale, Scaling, 010302 applied physics, Condensed Matter - Materials Science, business.industry, Materials Science (cond-mat.mtrl-sci), 021001 nanoscience & nanotechnology, cond-mat.mtrl-sci, Synchrotron, Transmission (telecommunications), Physical Sciences, Chemical Sciences, Optoelectronics, 0210 nano-technology, Joule heating, business, Voltage
Abstract

We analyzed micrometer-scale titanium-niobium-oxide prototype memristors, which exhibited low write-power (millions of cycles). To understand their physico-chemical operating mechanisms, we performed in-operando synchrotron x-ray transmission nanoscale spectromicroscopy using an ultra-sensitive time-multiplexed technique. We observed only spatially uniform material changes during cell operation, in sharp contrast to the frequently detected formation of a localized conduction channel in transition-metal-oxide memristors. We also associated the response of assigned spectral features distinctly to non-volatile storage (resistance change) and writing of information (application of voltage and Joule heating). These results provide critical insights into high-performance memristors that will aid in device design, scaling and predictive circuit-modeling, all of which are essential for the widespread deployment of successful memristor applications., 5 pages 4 fgures

Published
2016

39. Development of Laboratory Grating-based X-ray Phase Contrast Microtomography for Improved Pathology

Author

David Vine, Marco Stampanoni, Carolina Arboleda, Gad Singer, Joan Vila-Comamala, Lucia Romano, Zhentian Wang, Konstantins Jefimovs, Willy Kuo, Wenbing Yun, and Kristina Lång

Subjects
0301 basic medicine, Materials science, business.industry, Phase contrast microscopy, X-ray, 02 engineering and technology, Grating, 021001 nanoscience & nanotechnology, law.invention, 03 medical and health sciences, 030104 developmental biology, Optics, law, 0210 nano-technology, business, Instrumentation
Published
2018

40. Multi-modal Nanoscale Imaging of Materials and Biology

Author

David Vine, Felix Hofmann, Michael W. M. Jones, Brian Abbey, G. A. van Riessen, and Nicholas W. Phillips

Subjects
0301 basic medicine, 030103 biophysics, 03 medical and health sciences, Modal, Nanotechnology, Instrumentation, Nanoscopic scale
Published
2018

41. The Velociprobe: An ultrafast hard X-ray nanoprobe for high-resolution ptychographic imaging

Author

Sheikh T. Mashrafi, Maoyu Wang, Jeffrey A. Klug, Max Wyman, David Vine, Curt Preissner, Michael Wojcik, Barry Lai, Ke Yue, Stefan Vogt, Si Chen, Yudong Yao, Zhonghou Cai, Junjing Deng, Christian Roehrig, Tim Mooney, Zhenxing Feng, Yi Jiang, and Dafei Jin

Subjects
010302 applied physics, X-ray nanoprobe, Materials science, Microscope, business.industry, Resolution (electron density), Detector, Frame rate, 01 natural sciences, Ptychography, 010305 fluids & plasmas, law.invention, Data acquisition, Optics, law, 0103 physical sciences, business, Instrumentation, Image resolution
Abstract

Motivated by the advanced photon source upgrade, a new hard X-ray microscope called "Velociprobe" has been recently designed and built for fast ptychographic imaging with high spatial resolution. We are addressing the challenges of high-resolution and fast scanning with novel hardware designs, advanced motion controls, and new data acquisition strategies, including the use of high-bandwidth interferometric measurements. The use of granite, air-bearing-supported stages provides the necessary long travel ranges for coarse motion to accommodate real samples and variable energy operation while remaining highly stable during fine scanning. Scanning the low-mass zone plate enables high-speed and high-precision motion of the probe over the sample. With an advanced control algorithm implemented in a closed-loop feedback system, the setup achieves a position resolution (3σ) of 2 nm. The instrument performance is evaluated by 2D fly-scan ptychography with our developed data acquisition strategies. A spatial resolution of 8.8 nm has been demonstrated on a Au test sample with a detector continuous frame rate of 200 Hz. Using a higher flux X-ray source provided by double-multilayer monochromator, we achieve 10 nm resolution for an integrated circuit sample in an ultrafast scan with a detector's full continuous frame rate of 3000 Hz (0.33 ms per exposure), resulting in an outstanding imaging rate of 9 × 104 resolution elements per second.

Published
2019

42. Design optimization of a periodic microstructured array anode for hard x-ray grating interferometry

Author

Wenbing Yun, Ge Wang, Qiuping Wang, David Vine, Guibin Zan, and Richard Ian Spink

Subjects
Materials science, Monte Carlo method, Substrate (electronics), Electron, Grating, Article, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Optics, X-Ray Diffraction, Computer Simulation, Radiology, Nuclear Medicine and imaging, Area density, Absorption (electromagnetic radiation), Electrodes, Radiological and Ultrasound Technology, business.industry, Equipment Design, Models, Theoretical, Molecular Imaging, Anode, Interferometry, Transmission (telecommunications), 030220 oncology & carcinogenesis, business, Monte Carlo Method
Abstract

Talbot-Lau grating interferometer (TLGI) has great advantages in X-ray imaging contrasts, especially for low-Z materials, over conventional absorption contrast. A microstructured array anode target (MAAT) source offers significantly higher imaging throughput than the combination of an extended X-ray source paired with an absorption grating (also known as source grating). The performance of the MAAT source can be optimized with respect to the areal density, dimensions, and choice of material for the microstructured metal inserts (MMI) and the substrate in which they are embedded. In this paper, we analyze the X-ray generation efficiency per incident electron, relative fraction of X-rays generated by MMI and substrate, X-ray spectrum, and angular distribution via Monte Carlo simulation. Based on the simulation results, the optimal parameters are obtained for a MAAT with incident electron energies from 30 keV to 120 keV. The corresponding temperature distribution within the MAAT is also simulated for the optimal set of the parameters via finite element analysis. As demonstrated by the thermal analysis data, the maximum allowable electron-beam power loading was derived that allows a stable operation of the transmission MAAT.

Published
2019

43. Hard X-ray polarizer to enable simultaneous three-dimensional nanoscale imaging of magnetic structure and lattice strain

Author

Robert Winarski, Daniel Haskel, Deborah L. Schlagel, Ross Harder, Jonathan Logan, David Vine, Ian McNulty, Luxi Li, Peter Fuesz, C. Benson, and Pice Chen

Subjects
Diffraction, Nuclear and High Energy Physics, Materials science, Astrophysics::High Energy Astrophysical Phenomena, Biophysics, Physics::Optics, 02 engineering and technology, Optical Physics, Dichroic glass, 01 natural sciences, Physical Chemistry, law.invention, Magnetization, Optics, strain, law, 0103 physical sciences, 010306 general physics, Instrumentation, Radiation, Magnetic structure, Magnetic circular dichroism, business.industry, XMCD, Polarizer, 021001 nanoscience & nanotechnology, Polarization (waves), Condensed Matter Physics, Research Papers, Coherent diffraction imaging, Bragg coherent diffractive imaging, nanomagnetism, 0210 nano-technology, business, Physical Chemistry (incl. Structural)
Abstract

The performance of a diamond X-ray phase retarder to enable the production of circularly polarized X-rays has been quantitatively measured and magnetic dichroism contrast in transmission and diffraction geometries has been demonstrated. Feasibility tests for dichroic Bragg coherent diffractive imaging experiments were performed and showed that the diamond X-ray phase retarder does not produce significant distortions to the X-ray wavefront and that Bragg coherent diffractive imaging reconstructions are achievable., Recent progress in the development of dichroic Bragg coherent diffractive imaging, a new technique for simultaneous three-dimensional imaging of strain and magnetization at the nanoscale, is reported. This progress includes the installation of a diamond X-ray phase retarder at beamline 34-ID-C of the Advanced Photon Source. The performance of the phase retarder for tuning X-ray polarization is demonstrated with temperature-dependent X-ray magnetic circular dichroism measurements on a gadolinium foil in transmission and on a Gd5Si2Ge2 crystal in diffraction geometry with a partially coherent, focused X-ray beam. Feasibility tests for dichroic Bragg coherent diffractive imaging are presented. These tests include (1) using conventional Bragg coherent diffractive imaging to determine whether the phase retarder introduces aberrations using a nonmagnetic gold nanocrystal as a control sample, and (2) collecting coherent diffraction patterns of a magnetic Gd5Si2Ge2 nanocrystal with left- and right-circularly polarized X-rays. Future applications of dichroic Bragg coherent diffractive imaging for the correlation of strain and lattice defects with magnetic ordering and inhomogeneities are considered.

Published
2016

44. Bragg coherent diffraction imaging and metrics for radiation damage in protein micro-crystallography

Author

David Vine, Felix Hofmann, Brian Abbey, Ross Harder, Connie Darmanin, Evan Maxey, Jesse N. Clark, Henry Kirkwood, David Hoxley, Hannah D. Coughlan, and Nicholas W. Phillips

Subjects
0301 basic medicine, Diffraction, 030103 biophysics, Nuclear and High Energy Physics, Materials science, Physics::Optics, macromolecular substances, 02 engineering and technology, Lattice expansion, Crystallography, X-Ray, law.invention, 03 medical and health sciences, Optics, law, protein crystallography, Radiation damage, Animals, Radiation Damage, Instrumentation, Radiation, business.industry, dose, Proteins, Coherent imaging, 021001 nanoscience & nanotechnology, Coherent diffraction imaging, Synchrotron, Crystallography, Bragg coherent diffractive imaging, ddc:540, X-ray crystallography, micro-crystallography, Female, 0210 nano-technology, Protein crystallization, business, Chickens, Synchrotrons
Abstract

Journal of synchrotron radiation 24(1), 83 - 94(2017). doi:10.1107/S1600577516017525, The proliferation of extremely intense synchrotron sources has enabled ever higher-resolution structures to be obtained using data collected from smaller and often more imperfect biological crystals (Helliwell, 1984). Synchrotron beamlines now exist that are capable of measuring data from single crystals that are just a few micrometres in size. This provides renewed motivation to study and understand the radiation damage behaviour of small protein crystals. Reciprocal-space mapping and Bragg coherent diffractive imaging experiments have been performed on cryo-cooled microcrystals of hen egg-white lysozyme as they undergo radiation damage. Several well established metrics, such as intensity-loss and lattice expansion, are applied to the diffraction data and the results are compared with several new metrics that can be extracted from the coherent imaging experiments. Individually some of these metrics are inconclusive. However, combining metrics, the results suggest that radiation damage behaviour in protein micro-crystals differs from that of larger protein crystals and may allow them to continue to diffract for longer. A possible mechanism to account for these observations is proposed., Published by IUCr, Chester

Published
2016

45. Composition and oxidation state of sulfur in atmospheric particulate matter

Author

Ellery D. Ingall, Amelia F. Longo, Armistead G. Russell, David Vine, Rodney J. Weber, L. G. Huey, L. King, and Michelle Oakes

Subjects
Atmospheric Science, Ammonium sulfate, 010504 meteorology & atmospheric sciences, chemistry.chemical_element, 010501 environmental sciences, Particulates, respiratory system, Combustion, 01 natural sciences, Sulfur, complex mixtures, lcsh:QC1-999, Aerosol, lcsh:Chemistry, chemistry.chemical_compound, Diesel fuel, chemistry, lcsh:QD1-999, Fly ash, Environmental chemistry, lcsh:Physics, 0105 earth and related environmental sciences, Volcanic ash
Abstract

The chemical and physical speciation of atmospheric sulfur was investigated in ambient aerosol samples using a combination of sulfur near-edge x-ray fluorescence spectroscopy (S-NEXFS) and X-ray fluorescence (XRF) microscopy. These techniques were used to determine the composition and oxidation state of sulfur in common primary emission sources and ambient particulate matter collected from the greater Atlanta area. Ambient particulate matter samples contained two oxidation states: S0 and S+VI. Ninety-five percent of the individual aerosol particles (> 1 µm) analyzed contain S0. Linear combination fitting revealed that S+VI in ambient aerosol was dominated by ammonium sulfate as well as metal sulfates. The finding of metal sulfates provides further evidence for acidic reactions that solubilize metals, such as iron, during atmospheric transport. Emission sources, including biomass burning, coal fly ash, gasoline, diesel, volcanic ash, and aerosolized Atlanta soil, and the commercially available bacterium Bacillus subtilis, contained only S+VI. A commercially available Azotobacter vinelandii sample contained approximately equal proportions of S0 and S+VI. S0 in individual aerosol particles most likely originates from primary emission sources, such as aerosolized bacteria or incomplete combustion.

Published
2016

46. Opportunities and limitations for combined fly-scan ptychography and fluorescence microscopy

Author

Tom Peterka, Si Chen, Junjing Deng, Youssef S. G. Nashed, Chris Jacobsen, David Vine, Robert Ross, and Stefan Vogt

Subjects
Computer science, business.industry, Resolution (electron density), Fluorescence, Ptychography, Article, law.invention, Lens (optics), Optics, Data acquisition, law, Microscopy, Micrometer, Fluorescence microscope, Deconvolution, Luminescence, business, Nanoscopic scale
Abstract

X-ray fluorescence offers unparalleled sensitivity for imaging the nanoscale distribution of trace elements in micrometer thick samples, while x-ray ptychography offers an approach to image light element containing structures at a resolution beyond that of the x-ray lens used. These methods can be used in combination, and in continuous scan mode for rapid data acquisition when using multiple probe mode reconstruction methods. We discuss here the opportunities and limitations of making use of additional information provided by ptychography to improve x-ray fluorescence images in two ways: by using position-error-correction algorithms to correct for scan distortions in fluorescence scans, and by considering the signal-to-noise limits on previously-demonstrated ptychographic probe deconvolution methods. This highlights the advantages of using a combined approach.

Published
2016

47. 2D/3D cryo x-ray fluorescence imaging at the bionanoprobe at the advanced photon source

Author

Gayle E. Woloschak, Benjamin Hornberger, Ye Yuan, David Vine, Barry P. Lai, Si Chen, Claus Flachenecker, Qiaoling Jin, Stefan Vogt, Young-Pyo Hong, Tatjana Paunesku, Keith Brister, Chris Jacobsen, and Jie Deng

Subjects
Fluorescence-lifetime imaging microscopy, Materials science, law, Microscopy, Resolution (electron density), Fluorescence microscope, X-ray fluorescence, Nanotechnology, Advanced Photon Source, Fluorescence, Synchrotron, law.invention
Abstract

Trace elements, particularly metals, play very important roles in biological systems. Synchrotron-based hard X-ray fluorescence microscopy offers the most suitable capabilities to quantitatively study trace metals in thick biological samples, such as whole cells and tissues. In this manuscript, we have demonstrated X-ray fluorescence imaging of frozen-hydrated whole cells using the recent developed Bionanoprobe (BNP). The BNP provides spatial resolution down to 30 nm and cryogenic capabilities. Frozen-hydrated biological cells have been directly examined on a sub-cellular level at liquid nitrogen temperatures with minimal sample preparation.

Published
2016

48. Advances and challenges in cryo ptychography at the Advanced Photon Source

Author

Si Chen, Junjing Deng, Tom Peterka, Qiaoling Jin, David Vine, Stefan Vogt, Chris Jacobsen, and Youssef S. G. Nashed

Subjects
Physics, Elemental composition, Optics, Photon emission, business.industry, Resolution (electron density), Advanced Photon Source, business, Ptychography, Calculation methods, Article
Abstract

Ptychography has emerged as a nondestructive tool to quantitatively study extended samples at a high spatial resolution. In this manuscript, we report on recent developments from our team. We have combined cryo ptychography and fluorescence microscopy to provide simultaneous views of ultrastructure and elemental composition, we have developed multi-GPU parallel computation to speed up ptychographic reconstructions, and we have implemented fly-scan ptychography to allow for faster data acquisition. We conclude with a discussion of future challenges in high-resolution 3D ptychography.

Published
2016

49. Potential rebreathing of carbon dioxide during noninvasive ventilation provided by critical care ventilator

Author

Ahmed Al Hussain and David Vines

Subjects
carbon dioxide clearance, noninvasive ventilation, mechanical ventilation, co2 rebreathing, oronasal mask, full-face mask, Diseases of the respiratory system, RC705-779
Abstract

Background: Critical care ventilators are frequently used to provide noninvasive ventilation (NIV) support to critically ill patients. Questions remain regarding carbon dioxide (CO2) clearance while using a critical care ventilator and dual limb circuit with various patient interfaces. The purpose of this study is to determine the positive end expiratory pressure (PEEP) level required to effectively washout CO2 for full-face and oronasal masks when using a dual limb circuit. Method: This randomized crossover trial was conducted at an academic medical center in the Midwest United States. After obtaining informed consent, eight healthy volunteers were placed on a 980 Puritan Bennett (Medtronic, Minneapolis, MN) ventilator operating in the NIV mode. All subjects performed 20 min of breathing on four levels of PEEP (0, 2, 4, and 5 cm H2O) and pressure support of 5 cm H2O. NIV settings were applied to four masks (two oronasal and two full-face masks) that were randomly selected with a 5-min washout period between each mask. The fraction of inspired carbon dioxide (FICO2) was sampled/monitored with a nasal cannula using a Capnostream 20p monitor (Medtronic, Minneapolis, MN) and reported as percentages. A Kruskal–Wallis test was used to reveal significant differences across PEEP levels. Pairwise comparisons of the groups were made using Mann–Whitney tests with a family-wise error correction. Results: Median (IQR) FICO2 was significantly lower 0.0% (0%–0.92%) at PEEP of 5 compared to 1.83% (0.66%–4.0%; p < 0.001) at PEEP of 0 or 1.0% (0.33%–2.66%; p = 0.002) at PEEP of 2. FICO2 was significantly lower 0.5% (0%–1.92%) at PEEP of 4 compared to PEEP of 0 (p = 0.001). Conclusion: A PEEP level of at least 5 cm H2O associated with the reported leak was required to minimize the likelihood of CO2 rebreathing while using a critical care ventilator to provide NIV with a double limb circuit and full-face or oronasal masks.

Published
2022
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50. Continuous motion scan ptychography: characterization for increased speed in coherent x-ray imaging

Author

Stefan Vogt, Youssef S. G. Nashed, Chris Jacobsen, Tom Peterka, Si Chen, Junjing Deng, Nicholas W. Phillips, Robert Ross, and David Vine

Subjects
Diffraction, Physics, Image quality, business.industry, X-Rays, Image processing, Coherent diffraction imaging, Atomic and Molecular Physics, and Optics, Ptychography, Article, Motion, Data acquisition, Optics, Imaging, Three-Dimensional, Animals, Computer Simulation, Phase retrieval, business, Image resolution
Abstract

Ptychography is a coherent diffraction imaging (CDI) method for extended objects in which diffraction patterns are acquired sequentially from overlapping coherent illumination spots. The object’s complex transmission function can be reconstructed from those diffraction patterns at a spatial resolution limited only by the scattering strength of the object and the detector geometry. Most experiments to date have positioned the illumination spots on the sample using a move-settle-measure sequence in which the move and settle steps can take longer to complete than the measure step. We describe here the use of a continuous “fly-scan” mode for ptychographic data collection in which the sample is moved continuously, so that the experiment resembles one of integrating the diffraction patterns from multiple probe positions. This allows one to use multiple probe mode reconstruction methods to obtain an image of the object and also of the illumination function. We show in simulations, and in x-ray imaging experiments, some of the characteristics of fly-scan ptychography, including a factor of 25 reduction in the data acquisition time. This approach will become increasingly important as brighter x-ray sources are developed, such as diffraction limited storage rings.

Published
2015

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