Search Results - "CHAPUIS, O"

Overcoming non-radiative losses with AlGaAs PIN junctions for near-field thermophotonic energy harvesting by Legendre, J., Chapuis, P.-O.

“…In a thermophotonic device used in an energy-harvesting configuration, a hot light-emitting diode (LED) is coupled to a photovoltaic (PV) cell by means of…”
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Lifetimes of confined acoustic phonons in ultrathin silicon membranes by Cuffe, J, Ristow, O, Chávez, E, Shchepetov, A, Chapuis, P-O, Alzina, F, Hettich, M, Prunnila, M, Ahopelto, J, Dekorsy, T, Sotomayor Torres, C M

“…We study the relaxation of coherent acoustic phonon modes with frequencies up to 500 GHz in ultrathin free-standing silicon membranes. Using an ultrafast…”
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Coupling Mesoscopic Boltzmann Transport Equation and Macroscopic Heat Diffusion Equation for Multiscale Phonon Heat Conduction by Cheng, W., Alkurdi, A., Chapuis, P.-O.

“…Phonon heat conduction has to be described by the Boltzmann transport equation (BTE) when sizes or sources are comparable to or smaller than the phonon mean…”
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Native-oxide limited cross-plane thermal transport in suspended silicon membranes revealed by scanning thermal microscopy by Massoud, A. M., Bluet, J.-M., Lacatena, V., Haras, M., Robillard, J.-F., Chapuis, P.-O.

“…By thermally characterizing nanometer-thin suspended silicon membranes with various micrometric lengths in ambient conditions, we determine simultaneously the…”
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Temperature dependence of near-field radiative heat transfer above room temperature by Lucchesi, C., Vaillon, R., Chapuis, P.-O.

“…Stefan-Boltzmann's law indicates that far-field blackbody radiation scales at the fourth power of temperature. The temperature dependence of radiative heat…”
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Two-phase flow and evaporation in model fibrous media Application to the gas diffusion layer of PEM fuel cells by CHAPUIS, O, PRAT, M, QUINTARD, M, CHANE-KANE, E, GUILLOT, O, MAYER, N

“…Two-phase flow dominated by capillary effects in model fibrous media is studied combining pore-network simulations and visualisations on transparent…”
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Temperature-dependent and optimized thermal emission by spheres by Nguyen, K.L., Merchiers, O., Chapuis, P.-O.

“…We investigate the temperature and size dependencies of thermal emission by homogeneous spheres as a function of their dielectric properties. Different power…”
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Strong tip–sample coupling in thermal radiation scanning tunneling microscopy by Joulain, K., Ben-Abdallah, P., Chapuis, P.-O., De Wilde, Y., Babuty, A., Henkel, C.

“…We analyze how a probing particle modifies the infrared electromagnetic near field of a sample. The particle, described by electric and magnetic…”
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Near-field radiative heat transfer in scanning thermal microscopy computed with the boundary element method by Nguyen, K.L., Merchiers, O., Chapuis, P.-O.

“…•Spheres and sphere-surface configurations are used to validate numerical results.•We provide size and convergence criteria for finite and infinite…”
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Laparoscopic transgastric partial gastrectomy for a posterior fundic gastrointestinal stromal tumor by Abdalla, S, Baton, O, Rouquie, D, Boulanger, T, Chapuis., O

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Fine control of critical dimension for the fabrication of large bandgap high frequency photonic and phononic crystals by Cuffe, J., Dudek, D., Kehagias, N., Chapuis, P.-O., Reboud, V., Alsina, F., McInerney, J.G., Sotomayor Torres, C.M.

“…In this work artificial crystal structures designed to exhibit large and simultaneous photonic and phononic bandgaps, known as phoXonic crystals, are…”
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Retroperitoneal gastric duplication cyst by Malgras, B, Souraud, J.-B, Chapuis, O

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Influence of wettability conditions on slow evaporation in two-dimensional porous media by Chapuis, O, Prat, M

“…We study numerically the influence of the wettability condition on slow evaporation in two-dimensional pore square networks of aspect ratio 1. We show how…”
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Influence of contact angle on slow evaporation in two-dimensional porous media by Chraïbi, H, Prat, M, Chapuis, O

“…We study numerically the influence of contact angle on slow evaporation in two-dimensional model porous media. For sufficiently low contact angles, the drying…”
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Phonon-blocked junction refrigerators for cryogenic quantum devices by Mykkanen, E., Lehtinen, J. S., Ronzani, A., Kemppinen, A., Alkurdi, A., Chapuis, P.-O., Prunnila, M.

“…Refrigeration is an important enabler for quantum technology. The very low energy of the fundamental excitations typically utilized in quantum technology…”
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The role of videothoracoscopy in management of precordial thoracic penetrating injuries by Pons, F., Lang-Lazdunski, L., de Kerangal, X., Chapuis, O., Bonnet, P.M., Jancovici, R.

“…Objectives: To report on the value of diagnostic videothoracoscopy in patients with possible penetrating cardiac wounds. Methods: Thirteen patients admitted…”
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Universal Theory of Certain Solvable Groups and Bounded Ore Group Rings by Chapuis, O.

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Temperature Study of Sub-Micrometric ICs by Scanning Thermal Microscopy by Gomes, S., Chapuis, P.-O., Nepveu, F., Trannoy, N., Volz, S., Charlot, B., Tessier, G., Dilhaire, S., Cretin, B., Vairac, P.

“…Surface temperature measurements were performed with a scanning thermal microscope mounted with a thermoresistive wire probe of micrometric size. A CMOS device…”
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Phonon-blocked junction refrigerators for cryogenic quantum devices by Mykkänen, E, Lehtinen, J. S, Ronzani, A, Kemppinen, A, Alkurdi, A, Chapuis, P. -O, Prunnila, M

“…IEEE International Electron Devices Meeting (IEDM), 2020, pp. 25.8.1-25.8.4 Refrigeration is an important enabler for quantum technology. The very low energy…”
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Swift heavy ion irradiation reduces porous silicon thermal conductivity by Massoud, M., Canut, B., Newby, P., Frechette, L., Chapuis, P.O., Bluet, J.M.

“…While the electrical conductivity of semiconductors can be easily changed over order of magnitudes (8 in silicon) by playing on the doping, the thermal…”
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