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2,697 results on '"Maier J"'

112. Electronic modifications in (Ba,La)(Fe,Zn,Y)O3−δ unveiled by oxygen K-edge X-ray Raman scattering.

Author

Raimondi, G., Longo, A., Giannici, F., Merkle, R., Hoedl, M. F., Chiara, A., Sahle, C. J., and Maier, J.

Abstract

Oxides with mixed protonic–electronic conductivity are relevant as oxygen electrodes for protonic ceramic fuel cells and electrolyzers. We investigate the modification of the electronic structure of (Ba,La)(Fe,Zn,Y)O3−δ when iron is partially replaced by Zn2+ or Y3+ and when it changes between 3+ and 4+ formal oxidation states. With a combination of X-ray Raman scattering (O K-edge) and X-ray absorption near edge structure (Fe, Zn, and Y K-edges) and the corresponding simulations reproducing the spectroscopic data, we quantitatively analyze the degree of covalency of the Fe–O bonds in reduced (Fe mainly 3+) and oxidized (Fe mainly 4+) materials. The simulations employ two semi-empirical parameters to account for the electronic perturbations arising from Y and Zn doping and/or a change of the iron oxidation state. In the case of large structural and electronic rearrangements, the explicit consideration of 5-fold coordinated iron proved necessary. The observed lower Fe–O bond covalence in Zn- and Y-doped samples can be related to their increased proton uptake. The results discussed and the methodology used for quantifying the covalency of the bond between transition metals and oxygen is expected to be applicable also for other perovskites. It can thus serve as a tool for further optimization of oxygen electrode materials for protonic ceramic fuel and electrolyzer cells. [ABSTRACT FROM AUTHOR]

Published
2022
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117. Haptic assisted and VR-based training for minimally invasive K-wire drilling

Author

Maier, J, Perret, J, Simon, M, Schmitt-Rüth, S, Wittenberg, T, Palm, C, and Huber, M

Subjects
minimally invasive K-wire drilling, VR-based training, virtual fixtures, hand surgery, ddc: 610, 610 Medical sciences, Medicine, medical training simulator
Abstract

Objectives/Interrogation: Looking for less costly and time-consuming training methods for complex bone drilling procedures, we are developing a haptic and visual assisted VR-based training system for complex minimally-invasive K-wire insertion to the human hand [2]. Surgeons can learn,[for full text, please go to the a.m. URL], 14th Triennial Congress of the International Federation of Societies for Surgery of the Hand (IFSSH), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT), 11th Triennial Congress of the International Federation of Societies for Hand Therapy (IFSHT)

Published
2020
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118. Coupling superconducting qubits via a cavity bus

Author

Maier, J., Chow, J.M., Gambetta, J.M., Koch, Jens, Johnson, B.R., Schreier, J. A., Frunzio, L., Schuster, D.I., Houck, A.A., Wallraff, A., Blais, A., Devoret, M.H., Girvin, S.M., and Schoelkopf, R.J.

Subjects
Superconductors -- Properties, Quantum computing -- Materials, Environmental issues, Science and technology, Zoology and wildlife conservation, Materials, Properties
Abstract

Superconducting circuits are promising candidates for constructing quantum bits (qubits) in a quantum computer; single- qubit operations are now routine (1,2), and several examples (3-9) of two-qubit interactions and gates [...]

Published
2007

119. Nanosession: Ionics - Redox Kinetics, Ion Transport, and Interfaces

Author

Merkle, R., primary, Wang, L., additional, Mastrikov, Y. A., additional, Kotomin, E. A., additional, Maier, J., additional, Gregori, Giuliano, additional, Lupetin, Piero, additional, Maier, Joachim, additional, Knaup, Jan M., additional, Wehlau, Michael, additional, Frauenheim, Thomas, additional, Schie, Marcel, additional, Marchewka, Astrid, additional, De Souza, Roger A., additional, Müller, Thomas, additional, Waser, Rainer, additional, Hirschfeld, Julian A., additional, Lustfeld, Hans, additional, Majumder, S. B., additional, Ghanty, C., additional, and Basu, R. N., additional

Published
2013
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120. Poster: Polar Dielectrics, Optics, and Ionics

Author

Jin Kim, Yu, primary, Hyuk Park, Min, additional, Joon Kim, Han, additional, Seok Jeong, Doo, additional, Jiang, Anquan, additional, Seong Hwang, Cheol, additional, Schmelzer, Sebastian, additional, Böttger, Ulrich, additional, Waser, Rainer, additional, Liu, X., additional, Lu, H., additional, Burton, J. D., additional, Wang, Y., additional, Bark, C. W., additional, Zhang, Y., additional, Kim, D. J., additional, Stamm, A., additional, Lukashev, P., additional, Felker, D. A., additional, Folkman, C. M., additional, Gao, P., additional, Rzchowski, M. S., additional, Pan, X. Q., additional, Eom, C. B., additional, Gruverman, A., additional, Tsymbal, E. Y., additional, Politova, E. D., additional, Kaleva, G. M., additional, Mosunov, A. V., additional, Sadovskaya, N. V., additional, Segalla, A. G., additional, Mandal, Dipankar, additional, Henkel, Karsten, additional, Das, Suken, additional, Schmeißer, Dieter, additional, Abdel Halim, K. S., additional, Khedr, M. H., additional, Farghali, A. A., additional, Nasr, M. I., additional, Soliman, N. K., additional, Onbasli, Mehmet, additional, Goto, T., additional, Kim, D. H., additional, Bi, L., additional, Dionne, G. F., additional, Ross, C. A., additional, Schneller, Theodor, additional, Goodwin, Simon, additional, Di Quarto, Francesco, additional, Di Franco, Francesco, additional, Santamaria, Monica, additional, Yuan, Hongtao, additional, Ishida, Y., additional, Koizumi, K., additional, Shimotani, H., additional, Kanai, K., additional, Akaike, K., additional, Kubozono, Y., additional, Tsukazaki, A., additional, Kawasaki, M., additional, Shin, S., additional, Iwasa, Y., additional, De Souza, Roger A., additional, Metlenko, Veronika, additional, Schraknepper, Henning, additional, Ramadan, Amr, additional, Grope, B. O. H., additional, Grieshammer, S., additional, Koettgen, J., additional, Martin, M., additional, Shibuya, Taizo, additional, Yasuoka, Kenji, additional, Mirbt, Susanne, additional, Sanyal, Biplab, additional, Aoki, Yoshitaka, additional, Martin, Manfred, additional, Merkle, R., additional, Shirpour, M., additional, Rahmati, B., additional, Sigle, W., additional, van Aken, P. A., additional, Maier, J., additional, Sobolev, N. A., additional, Azevedo, A. M., additional, Bazarov, V. V., additional, Zhiteytsev, E. R., additional, Khaibullin, R. I., additional, Griesche, David, additional, Otsuka, Yusuke, additional, Pithan, Christian, additional, Dornseiffer, Jürgen, additional, Lustfeld, H., additional, Pithan, C., additional, and Reißel, M., additional

Published
2013
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124. Perspective: C+60 and laboratory spectroscopy related to diffuse interstellar bands.

Author

Campbell, E. K. and Maier, J. P.

Subjects
*INTERSTELLAR molecules, *ABSORPTION spectra, *ASTROPHYSICS, *NITROGEN, *INTERSTELLAR medium
Abstract

In the last 30 years, our research has focused on laboratory measurements of the electronic spectra of organic radicals and ions. Many of the species investigated were selected based on their potential astrophysical relevance, particularly in connection with the identification of appealing candidate molecules for the diffuse interstellar absorptions. Notably, carbon chains and derivatives containing hydrogen and nitrogen atoms in their neutral and ionic forms were studied. These data could be obtained after developing appropriate techniques to record spectra at low temperatures relevant to the interstellar medium. The measurement of gas phase laboratory spectra has enabled direct comparisons with astronomical data to be made and though many species were found to have electronic transitions in the visible where the majority of diffuse bands are observed, none of the absorptions matched the prominent interstellar features. In 2015, however, the first carrier molecule was identified: C+60. This was achieved after the measurement of the electronic spectrum of C+60-He at 6K in a radiofrequency ion trap. [ABSTRACT FROM AUTHOR]

Published
2017
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140. 776P Phase II trial of concurrent nivolumab in urothelial bladder cancer with radiation therapy in localized/locally advanced disease for chemotherapy ineligible patients [NUTRA trial]

Author

Vaishampayan, U.N., primary, Heilbrun, L.K., additional, Vaishampayan, N., additional, Li, C., additional, Shi, D., additional, Frazier, A., additional, Maier, J., additional, Dickow, B., additional, Kuettel, M., additional, Chatta, G., additional, and George, S., additional

Published
2020
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145. Mesoscopic fast ion conduction in nanometre-scale planar heterostructures

Author

Sata, N., Eberman, K., Eberl, K., and Maier, J.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): N. Sata (corresponding author); K. Eberman [1]; K. Eberl; J. Maier Ion conduction is of prime importance for solid-state reactions in ionic systems, and for devices such as high-temperature [...]

Published
2000
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147. P3724Impact of chronic kidney disease on efficacy and safety of interventional left atrial appendage closure – results from the prospective multicenter LAARGE registry

Author

Fastner, C, primary, Brachmann, J, additional, Lewalter, T, additional, Zeymer, U, additional, Sievert, H, additional, Nienaber, C A, additional, Weiss, C, additional, Ince, H, additional, Maier, J, additional, Achenbach, S, additional, Sigusch, H H, additional, Hochadel, M, additional, Schneider, S, additional, Senges, J, additional, and Akin, I, additional

Published
2019
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