Publications

Type de document

Mots clés

Auteur

Du

Au

Affichage de 7451 à 7460 sur 16545

Article dans une revue

All optical method for investigation of spin and charge transport in semiconductors : combination of spatially and time-resolved luminescence

Fabian Cadiz, Philippe Barate, D. Paget, Denis S Grebenkov, J.P. Korb, A.C.H. Rowe, Thierry Amand, S. Arscott, Emilien Peytavit

A new approach is demonstrated for investigating charge and spin diffusion as well as surface and bulk recombination in unpassivated doped semiconductors. This approach consists in using two complementary, conceptually related, techniques, which are time-resolved photoluminescence (TRPL) and…

Journal of Applied Physics, 2014, 116 (2), pp.023711. ⟨10.1063/1.4889799⟩. ⟨hal-01024991⟩

Article dans une revue

Simultaneous bandgaps in LiNbO3 phoxonic crystal slab

Quentin Rolland, Samuel Dupont, Joseph Gazalet, Jean-Claude Kastelik, Yan Pennec, Bahram Djafari-Rouhani, Vincent Laude

We study simultaneous photonic and phononic crystal slabs created in Z-cut lithium niobate membranes. Bandgaps for guided waves are identified using the three-dimensional finite element method (FEM). Three lattices are considered: the square, the hexagonal, and the honeycomb lattices. We…

Optics Express, 2014, 22 (13), pp.16288-16297. ⟨10.1364/OE.22.016288⟩. ⟨hal-01018289⟩

Article dans une revue

Acousto-optic couplings in a phoXonic crystal slab L1 cavity

Samuel Dupont, Quentin Rolland, Joseph Gazalet, Jean-Claude Kastelik

Acousto-optic coupling mechanisms within simultaneous photonic and phononic crystal cavities are theoretically studied. The structure considered is a silicon slab drilled periodically with air holes arranged on a square lattice; the cavity is obtained by removing one hole from the ideal crystal…

Journal of Physics: Conference Series, 2014, 490, 012175, 4 p. ⟨10.1088/1742-6596/490/1/012175⟩. ⟨hal-00961478⟩

Article dans une revue

Optomechanical interactions in two-dimensional Si and GaAs phoXonic cavities

Said El-Jallal, M. Oudich, Yan Pennec, Bahram Djafari-Rouhani, A. Makhoute, Quentin Rolland, Samuel Dupont, Joseph Gazalet

We investigate theoretically the optomechanical interactions inside cavities created in two-dimensional infinite phoXonic crystals constituted by a square array of holes in silicon (Si) and gallium arsenide (GaAs) matrices. The cavity is simply obtained by removing one hole in the perfect crystal.…

Journal of Physics: Condensed Matter, 2014, 26, 015005, 12 p. ⟨10.1088/0953-8984/26/1/015005⟩. ⟨hal-00923930⟩

Communication dans un congrès

Scanning tunneling microscopy of GaAs/GaAsSb nanowires

Adrian Díaz Álvarez, Pierre Capiod, Maxime Berthe, Tao Xu, Jean-Philippe Nys, Isabelle Lefebvre, Philippe Caroff, Philipp Ebert, B. Grandidier

Understanding surface structure and surface composition is of particular importance for semiconductor nanowire applications, since they might strongly contribute to the electrical, optical and thermal properties of the Nanowires. A prototypical material is GaAs, where polytype inclusions consisting…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium E - Defect-induced effects in nanomaterials, 2014, Lille, France. ⟨hal-00964089⟩

Communication dans un congrès

PbS quantum dots and ZnO nanowires for 3rd generation solar cells

Basma El Zein, El Hadj Dogheche, Enrico Traversa

Semiconductor nanostructures with low dimensions such as quantum dots and nanowires are considered as important building blocks for the third generation solar cells, due to their useful optical and electrical properties. Quantum dots and nanowires hold promising potency to improve the performance…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium Y - Advanced materials and characterization techniques for solar cells II, 2014, Lille, France. ⟨hal-00964524⟩

Article dans une revue

Mueller matrix optical and magneto-optical characterization of Bi-substituted gadolinium iron garnet for application in magnetoplasmonic structures

L. Halagacka, K. Postava, Mathias Vanwolleghem, Francois Vaurette, Jamal Ben Youssef, B. Dagens, J. Pistora

A ferromagnetic garnet, used as a magneto-optical (MO) material in magneto-photonic and magneto-plasmonic structures, is characterized. We present a general procedure to determine optical and magneto-optical functions of the magneto-optic garnet by using Mueller matrix ellipsometry. In the first…

Optical Materials Express, 2014, 4 (9), pp.1903-1919. ⟨10.1364/OME.4.001903⟩. ⟨hal-01058152⟩

Article dans une revue

Demonstrating kHz frequency actuation for conducting polymer microactuators

Ali Maziz, Cedric Plesse, Caroline Soyer, Claude Chevrot, Dominique Teyssié, Eric Cattan, Frederic Vidal

This paper reports results on ionic EAP micromuscles converting electrical into micromechanical response in open-air. Translation of small ion motion into large deformation in bending microactuator and its amplifi cation by fundamental resonant frequency are used as tools to demonstrate that small…

Advanced Functional Materials, 2014, 24, pp.4851-4859. ⟨10.1002/adfm.201400373⟩. ⟨hal-01058060⟩

Communication dans un congrès

Approach-to-equilibrium molecular dynamics for thermal conductivies and boundary conductances

Pier Luca Palla, Evelyne Lampin, Pierre-Arnaud Francioso, Fabrizio Cleri

Thermal transport is simulated at the atomic scale by approach-to-equilibrium molecular dynamics simulations (AEMD) [1]. In this method, a hot and a cold regions are delimited, before the approach-to-equilibrium is simulated by releasing the thermal constraint. The temperature difference between…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00966169⟩

Article dans une revue

UWB cooperatif radar for localization and communication dedicated to guided transport

Tarik Tahri, Yassin El Hillali, Laila Sakkila, Atika Rivenq

Wireless technology for communication and localization in train applications are widely used. Ultra wide band appears as a very suitable technology for this kind of application, due to its large bandwidth, also to its good resistance to the interference and to multipath. In this paper, a new system…

International Journal of Intelligent Systems and Applications, 2014, 6, pp.27-33. ⟨10.5815/ijisa.2014.10.04⟩. ⟨hal-01056958⟩