Flux rss des publications

Publications

Affichage des publications 531 à 540 sur 724 au total

Science des matériaux

Fermi level shift in carbon nanotubes by dye confinement

Dye confinement into carbon nanotube significantly affects the electronic charge density distribution of the final hybrid system. Using the electron-phonon coupling sensitivity of the Raman G-band, we quantify experimentally how charge transfer from…

Yann Almadori, G. Delport, Romain Chambard, L. Orcin-Chaix, A. C. Selvati, Nicolas Izard, Anouar Belhboub, Raymond Aznar, B. Jousselme, S. Campidelli, Patrick Hermet, Rozenn Le Parc, T. Saito, Y. Sato, K. Suenaga, Pascal Puech, J.-S Lauret, Guillaume Cassabois, Jean-Louis Bantignies, Laurent Alvarez

Carbon -

Chimie

Raspberry-like small multicore gold nanostructures for efficient photothermal conversion in the first and second near-infrared windows

Gold nanoraspberries were synthesized by a seed-mediated synthesis with polyethylene glycol-functionalized bisphosphonates. The original structure shifted the optical absorption to infrared, revealing very efficient photothermal properties within…

Anouchka Plan Sangnier, Romain Aufaure, Soshan Cheong, Laurence Motte, Bruno Palpant, Richard Tilley, Erwann Guenin, Claire Wilhelm, Yoann Lalatonne

Chemical Communications -

Optique

Rotation measurements using a resonant fiber optic gyroscope based on Kagome fiber

We build a resonant fiber optic gyro based on Kagome hollow-core fiber. A semi-bulk cavity architecture based on an 18-m-long Kagome fiber permits achieving a cavity finesse of 23 with a resonance linewidth of 700 kHz. An optimized Pound-Drever-Hall…

Alexia Ravaille, Gilles Feugnet, Benoît Debord, Frédéric Gérôme, Fetah Benabid, Fabien Bretenaker

Applied optics -

Chimie

Redox-switching of ternary Ni(ii) and Cu(ii) complexes synthesis, experimental and theoretical studies along with second-order nonlinear optical properties

Four new ternary Ni(ii) and Cu(ii) complexes of ONO tridentate Schiff base and pyridylmethylenepyran (PyMP) ligands [(R-ONO)M(PyMP)] (R = anisyl = An M = Ni 1, Cu 2; R = ferrocenyl = Fc M = Ni 3, Cu 4) have been synthesized under facile reaction…

Néstor Novoa, Carolina Manzur, Thierry Roisnel, Vincent Dorcet, Nolwenn Cabon, Françoise Robin-Le Guen, Isabelle Ledoux-Rak, Samia Kahlal, Jean-Yves Saillard, David Carrillo, Jean-René Hamon

New Journal of Chemistry -

Supraconductivité

An observable prerequisite for the existence of persistent currents

A classical model is presented for persistent currents in superconductors. Their existence is argued to be warranted because their decay would violate the second law of thermodynamics. This conclusion is achieved by analyzing comparatively Ohm's law…

Jacob Szeftel, Nicolas Sandeau, Michel Abou Ghantous

The European Physical Journal B: Condensed Matter and Complex Systems -

Optique

Nitrogen impurities and fluorescent NVcenters in detonation nanodiamonds: identification and distinct features

We show that nitrogen is the main impurity contained in detonation nano-diamonds (DNDs), at a concentration of ~16000 ppm. The content of nitrogen-vacancy (NV-) centers in these DNDs is ~2.7 ppm, which is the largest of all known types of nano…

V. Yu. Osipov, S. Abbasi Zargaleh, François Treussart, K. Takai, N. Romanov, F. Shakhov, A. Baldycheva, Osipov V Yu, Zargaleh S Abbasi

Journal of Optical Technology -

photonique

Burning TADF Solids Reveals their Excitons’ Mobility tototo

Thermally Activated Delayed Fluorescence (TADF) compounds contribute to the light emission of an optoelectronic device by harvesting both their singlet and triplet states. But quenching limits such benefits at high current densities. In the case of…

Zhengyu Zhang, Arnaud Brosseau, Margaux Elie, Matthieu Hamel, Sylvain Gaillard, Robert Bernard Pansu

Central European Conference on Photochemistry 2018 -

photonique

Burning TADF Solids Reveals their Excitons’ Mobility

Thermally Activated Delayed Fluorescence (TADF) compounds contribute to the light emission of an optoelectronic device by harvesting both their singlet and triplet states. But quenching limits such benefits at high current densities. In the case of…

Zhengyu Zhang, Arnaud Brosseau, Margaux Elie, Matthieu Hamel, Sylvain Gaillard, Robert Bernard Pansu

Central European Conference on Photochemistry 2018 -

Physique

Out-of-plane modes in three-dimensional Fabry-Perot microlasers

Microlasers are involved in a broad range of devices for numerous research applications. However, the mode structures of three-dimensional microlasers without rotational symmetry are largely unexplored. Previous studies of such cavities revealed…

N. Sobeshchuk, M A Guidry, Clément Lafargue, R. Gashemi, D. Decanini, J. Zyss, Mélanie Lebental

Applied Physics Letters -