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295 results on '"Sotomayor Torres, C.M."'

19. Shear strains in dry etched GaAs/A1As wires studied by high resolution x-ray reciprocal space mapping

Author

Darhuber, A.A., Bauer, G., Wang, P.D., and Sotomayor Torres, C.M.

Subjects
X-ray microanalysis -- Usage, Shear (Mechanics) -- Research, Strains and stresses -- Research, Physics
Abstract

Researchers investigated shear strain in quantum wires and quantum dots using high-resolution x-ray reciprocal space mapping technology. This technique is very useful for the investigation of shear strain distribution in semiconductor nanostructures, due to the fact that shear strains affect the intensity of usually weak x-ray diffraction peaks. The researchers were able to detect pitch variations as small as 10% of the period and to demonstrate a discretization pattern.

Published
1998

22. Raman scattering of coupled longitudinal optical phonon-plasmon modes in dryetched n+-GaAs._

Author

Wang, P.D., Foad, M.A., Sotomayor-Torres, C.M., Thoms, S., Watt, M., Cheung, R., Wilkinson, C.D.W., and Beaumont, S.P.

Subjects
Raman effect -- Usage, Semiconductors -- Etching, Gallium arsenide semiconductors -- Research, Physics
Abstract

The damage caused by dry etching on GaAs was studied using Raman scattering wherein the heavily doped n+-GaAs (2-3 to the 18th power super -3) analyzes thedry etch-induced damage through the coupled longitudinal optical phonon-plasmonmode as a probe. Conventional radio frequency etching, ion beam etching and electron cyclotron radio frequency reactive ion etching (ECR-RIE) were used andresults show that ECR-RIE produces the least damage.

Published
1992

28. Polymer stamps for nanoimprinting

Author

Pfeiffer, K., Fink, M., Ahrens, G., Gruetzner, G., Reuther, F., Seekamp, J., Zankovych, S., Sotomayor Torres, C.M., Maximov, I., Beck, M., Graczyk, M., Montelius, L., Schulz, H., Scheer, H.-C., and Steingrueber, F.

Published
2002
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30. Nanocrystalline silicon optomechanical cavities

Author

Universitat Politècnica de València. Instituto Universitario de Tecnología Nanofotónica - Institut Universitari de Tecnologia Nanofotònica, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Generalitat de Catalunya, Ministerio de Economía y Competitividad, Navarro-Urrios, D., Capuj, N.E., Maire, J., Colombano, M.F., Jaramillo-Fernandez, J., Chavez-Angel, E., Martín-Rodríguez, Leopoldo Luis, Mercadé-Morales, Laura, Griol Barres, Amadeu, Martínez Abietar, Alejandro José, Sotomayor-Torres, C.M., Ahopelto, J., Universitat Politècnica de València. Instituto Universitario de Tecnología Nanofotónica - Institut Universitari de Tecnologia Nanofotònica, Universitat Politècnica de València. Departamento de Comunicaciones - Departament de Comunicacions, Generalitat de Catalunya, Ministerio de Economía y Competitividad, Navarro-Urrios, D., Capuj, N.E., Maire, J., Colombano, M.F., Jaramillo-Fernandez, J., Chavez-Angel, E., Martín-Rodríguez, Leopoldo Luis, Mercadé-Morales, Laura, Griol Barres, Amadeu, Martínez Abietar, Alejandro José, Sotomayor-Torres, C.M., and Ahopelto, J.

Abstract

"© 2018 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited", [EN] Silicon on insulator photonics has offered a versatile platform for the recent development of integrated optomechanical circuits. However, there are some constraints such as the high cost of the wafers and limitation to a single physical device level. In the present work we investigate nanocrystalline silicon as an alternative material for optomechanical devices. In particular we demonstrate that optomechanical crystal cavities fabricated of nanocrystalline silicon have optical and mechanical properties enabling non-linear dynamical behaviour and effects such as thermo-optic/free-carrier-dispersion self-pulsing, phonon lasing and chaos, all at low input laser power and with typical frequencies as high as 0.3 GHz. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Published
2018

35. Structural and thermal properties of bare and chromium-covered block copolymer

Author

Sachat A., El, Guen, E., Dobson, A., Kreuzer, M., Chapuis, P.-O., Gomès, S., Kolosov, O., ALZINA, F., Sotomayor Torres, C.M., CETHIL, Laboratoire, Catalan Institute of Nanotechnology (ICN-CIN2), Universitat Autònoma de Barcelona (UAB), Centre d'Energétique et de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Department of Physics [Lancaster], and Lancaster University

Subjects
[SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

International audience

Published
2016

36. A 1D phoxonic crystal

Author

Gomis-Bresco, J., Navarro-Urrios, D., Oudich, Mourad, El-Jallal, Said, Griol, A., PUERTO, D., Chavez, E., Pennec, Yan, Djafari-Rouhani, Bahram, ALZINA, F., Martínez, A., Sotomayor Torres, C.M., ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), Universitat Autònoma de Barcelona (UAB), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Université Moulay Ismail (UMI), Nanophotonics Technology Center, and Universitat Politècnica de València (UPV)

Subjects
Condensed Matter::Materials Science, Condensed Matter::Superconductivity, Physics::Space Physics, Physics::Optics
Abstract

Simultaneous confinement of light and sound in the same cavity generates a strong phonon-photon interaction, known as optomechanical (OM) coupling. Several optomechanical systems provided already proof of concept demonstrations for enhanced telecommunication devices and sensors. And using OM cavities, the basis for coherent phonon manipulation have already been set and/or propose. OM crystals (cavities built using the concepts of photonic and phononic crystals) target high frequency phonons. High frequency phonons have a competitive advantage as the thermal phonon population decreases with frequency. Using OM crystals, a recent work achieved a single confined phonon by OM cooling starting at moderate cryogenic temperatures. If the OM cavity is built using a complete phonon bandgap we calculated a better limitation of phonon losses, robust to fabrication imprefections. Cavities with simultaneous bandgap for light and sound are known as phoXonic crystals. We study the OM interaction in a 1D phoXonic crystal cavity. The cavity consists of a suspended silicon nanobeam made with the repetition of a cell with a centered hole and a centered stub. A defect made by changing appropriately the cell dimensions towards the nanobeam center confines simultaneously light and sound. We present the experimental characterization of such structure, where we have detected by OM transduction modes inside the complete bandgap.

Published
2014

37. A Hooke's law-based approach to protein folding rate

Author

Ruiz-Blanco Y.B., Marrero-Ponce Y., Prieto P.J., Salgado J., García Y., Sotomayor-Torres C.M., Ruiz-Blanco Y.B., Marrero-Ponce Y., Prieto P.J., Salgado J., García Y., and Sotomayor-Torres C.M.

Abstract

Kinetics is a key aspect of the renowned protein folding problem. Here, we propose a comprehensive approach to folding kinetics where a polypeptide chain is assumed to behave as an elastic material described by the Hooke[U+05F3]s law. A novel parameter called elastic-folding constant results from our model and is suggested to distinguish between protein with two-state and multi-state folding pathways. A contact-free descriptor, named folding degree, is introduced as a suitable structural feature to study protein-folding kinetics. This approach generalizes the observed correlations between varieties of structural descriptors with the folding rate constant. Additionally several comparisons among structural classes and folding mechanisms were carried out showing the good performance of our model with proteins of different types. The present model constitutes a simple rationale for the structural and energetic factors involved in protein folding kinetics. © 2014 Elsevier Ltd.

Published
2015

38. Phonon confinement in silicon ridges as a probe of 2D thermal constrictions

Author

Chapuis, Pierre-Olivier, Shchepetov, A., PRUNNILA, M., Schneider, Lars, Chavez, E., Ahopelto, J., Sotomayor Torres, C.M., CETHIL, Laboratoire, Centre de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Technical Research Centre of Finland, VTT Technical Research Centre of Finland (VTT), ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), and Universitat Autònoma de Barcelona (UAB)

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

Presentation; International audience

Published
2013

39. Optomechanical coupling in 1D corrugated structures with complete dual photonic and phononic band gap

Author

Gomis-Bresco, J., Navarro-Urrios, D., Oudich, Mourad, Griol, A., PUERTO, D., Martínez, Alejandro, El-Jallal, Said, Pennec, Yan, Djafari-Rouhani, Bahram, ALZINA, F., SOTOMAYOR-TORRES, C.M., Catalan Institute of Nanotechnology (ICN), Universitat Autònoma de Barcelona (UAB), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Nanophotonics Technology Center, and Universitat Politècnica de València (UPV)

Published
2013

40. Directed self-assembly of block copolymers mediated by solvent assisted NIL

Author

Simao, C., Kehagias, N., Borah, D., Kosmala, B., Salaun, M., Zelsmann, M., A. Morris, M., Sotomayor Torres, C.M., Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Clot, Marielle, and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

41. Heat capacity of ultra-thin free-standing membranes

Author

Chavez, E., Chapuis, Pierre-Olivier, Alzina, F., Cuffe, J., Sotomayor Torres, C.M., ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), Universitat Autònoma de Barcelona (UAB), Centre de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and CETHIL, Laboratoire

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

Presentation; International audience

Published
2012

42. Heat Conduction in Nanostructures Investigated with Electrical Means - A Comparison with Optical Techniques

Author

Chapuis, Pierre-Olivier, Shchepetov, A., Prunnila, Mika, Ahopelto, Jouni, Volz, Sebastian, Schneider, Lars, Sotomayor Torres, C.M., Centre de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Technical Research Centre of Finland, VTT Technical Research Centre of Finland (VTT), Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion (EM2C), CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-Université Paris Saclay (COmUE), ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), Universitat Autònoma de Barcelona (UAB), and CETHIL, Laboratoire

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

'Invited lecture' (1h); International audience

Published
2012

43. Thermal conductivity of nanometre-scale thin single crystalline membranes

Author

CUFFE, J., Chavez, E., Shchepetov, A., Chapuis, Pierre-Olivier, ALZINA, F., PRUNNILA, M., Schneider, Lars, Ahopelto, J., Sotomayor Torres, C.M., Universitat Autònoma de Barcelona (UAB), ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), Technical Research Centre of Finland, VTT Technical Research Centre of Finland (VTT), Centre de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), and CETHIL, Laboratoire

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

Presentation; International audience

Published
2012

44. The thermal conductivity of nanometer-scale thick free-standing silicon membranes

Author

CUFFE, J., Chavez, E., Shchepetov, A., Chapuis, Pierre-Olivier, ALZINA, F., PRUNNILA, M., Schneider, Lars, Ahopelto, J., Sotomayor Torres, C.M., CETHIL, Laboratoire, Universitat Autònoma de Barcelona (UAB), ICN2 - Institut Catala de Nanociencia i Nanotecnologia (ICN2), Technical Research Centre of Finland, VTT Technical Research Centre of Finland (VTT), Centre de Thermique de Lyon (CETHIL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [PHYS.MECA.THER]Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], ComputingMilieux_MISCELLANEOUS, [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Abstract

Presentation; International audience

Published
2012

45. Lifetimes of confined phonons in free-standing silicon membranes

Author

Cuffe, J., Chavez, E., Chapuis, Pierre-Olivier, Alzina, F., Sotomayor Torres, C.M., Shchepetov, A., Prunnila, M., Ahopelto, J., Ristow, Oliver, Hettich, Mike, Dekorsy, Thomas, and CETHIL, Laboratoire

Subjects
[PHYS.MECA.THER] Physics [physics]/Mechanics [physics]/Thermics [physics.class-ph], [SPI.MECA.THER] Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph]
Published
2012

46. Direct patterning and ordering of diblock copolymers through nanoimprint lithography

Author

Salaün, M., Kehagias, N., Le Gallic, M., Sotomayor Torres, C.M, Zelsmann, M., Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Clot, Marielle, and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

47. Nanostructured Microdroplets and Concentric Nanorings Fabricated by Surface-directed Dewetting of a Block Copolymer

Author

Farrell, R.A, Kehagias, N., Shaw, M.T, Reboud, V., Zelsmann, M., Holmes, J.D., Sotomayor Torres, C.M, Morris, M.A., Laboratoire des technologies de la microélectronique (LTM), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and Clot, Marielle

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

48. Tailored synthesized silsesquioxane based resists for UV assisted nanoimprint lithography

Author

Chouiki, M., Kehagias, N., Zelsmann, M., Schoeftner, R., Sotomayor Torres, C.M, Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), and Clot, Marielle

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

49. Dispersion of confined acoustic phonons in ultra-thin silicon membranes

Author

Cuffe, J., Chavez, E., Chapuis, P.O., El Boudouti, E.H., Alzina, F., Dudek, D., Pennec, Yan, Djafari-Rouhani, Bahram, Shchepetov, A., Prunnila, M., Ahopelto, J., Sotomayor-Torres, C.M., Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), and Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)

Subjects
Condensed Matter::Materials Science, Condensed Matter::Superconductivity, Condensed Matter::Strongly Correlated Electrons
Abstract

The acoustic phonon dispersion curves of ~10 and ~30 nm Si membranes were measured using Brillouin Light Scattering (BLS) spectroscopy. The dispersion relations of the confined phonons were calculated from a semianalytical model based on continuum elasticity theory. Green’s function simulations were used to simulate both the phonon density of states and Brillouin spectra of themembranes. The effect of the native oxide layer was also considered, and found to affect significantly the dispersion of the higher order modes.

Published
2011

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