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Affichage de 7051 à 7060 sur 16551

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⟩

Article dans une revue

Angle-dependent ray tracing simulations of reflections on pyramidal textures for silicon solar cells

Vincent Magnin, Joseph Harari, Mathieu Halbwax, S Bastide, D Cherfi, Jean-Pierre Vilcot

Pyramidal textures are commonly used to reduce reflections from silicon solar cells and improve light absorption by light trapping. They are generally modelled or characterized under normal incidence. In this work, a monolayer 3D ray tracing program taking into account the polarisation of light…

Solar Energy, 2014, 110, pp.378 - 385. ⟨10.1016/j.solener.2014.09.025⟩. ⟨hal-01403918⟩

Article dans une revue

Modulation recognition for MIMO relaying broadcast channels with direct link

Wassim Ben Chikha, Iyad Dayoub, Walaa Hamouda, Rabah Attia

In this letter, we investigate the performance of modulation identification based on pattern recognition approach using the decision tree (J48) classifier, for multiple-inputmultipleoutput (MIMO) relaying broadcast channels with direct link (source-to-destination). The proposed system identifies…

IEEE Wireless Communications Letters, 2014, 3 (1), pp.50-53. ⟨10.1109/WCL.2013.111113.130655⟩. ⟨hal-00954477⟩

Communication dans un congrès

Hybrid organic-inorganic nanocomposites for terahertz applications

D. Hourlier-Bahloul, Srisaran Venkatachalam, Christophe Boyaval, Guillaume Ducournau, Y. Blum, Jean-Francois Lampin

The TeraHertz (THz) portion corresponds to the part of the electromagnetic spectrum having frequencies ranging from 0.3 to 10 THz. Unlike UV or X-rays, THz photons are not energetic enough to break chemical bonds or to ionize atoms or molecules. These radiations have found widespread applications…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium I - Solution processing and properties of functional oxide thin films and nanostructures, 2014, Lille, France. ⟨hal-00964115⟩

Communication dans un congrès

Acousto-optic couplings in two-dimensional lithium niobate phoxonic crystal

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

We investigate the acousto-optic couplings in two-dimensional infinite piezoelectric phoXonic crystal cavities. The periodic structure considered consists in a square array of air inclusions drilled in Lithium Niobate matrix. This structure allows the simultaneous confinement of acoustic and optic…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00976642⟩

Communication dans un congrès

Acousto-optical tunable transmissive grating beam splitter

Anthony Dieulangard, Jean-Claude Kastelik, Samuel Dupont, Joseph Gazalet

We present a tunable transmissive grating beam splitter for multiple laser line separation based on acousto-optic interaction in tellurium dioxide. Acousto-optic devices are well known for light modulation, frequency shifting, filtration or deflection. For a deflector, the incident light beam is…

SPIE Photonics West, OPTO 2014, Conference 8982 - Optical Components and Materials XI, 2014, San Francisco, CA, United States. 89821H, 8 p., ⟨10.1117/12.2036327⟩. ⟨hal-00964449⟩

Article dans une revue

Train accurate localization using ultra wide band radio and time reversal

Bouna Fall, Fouzia Elbahhar, Marc Heddebaut, Atika Rivenq

In guided transport, the precise localization of trains is vital for nominal operation of the transport system. In a propagation environment such as a railway line, an effective localization sensor is complex to design since it must operate in the presence of many fixed and mobile obstacles…

International Journal of Engineering and Innovative Technology, 2014, 3 (Issue 12), p234-244. ⟨hal-01068479⟩

Communication dans un congrès

Mesure de la permittivité complexe du polydimethylsiloxane (PDMS) jusqu'à 220 GHz pour la mise en oeuvre d'une électronique souple

Pierre-Yves Cresson, Yovan Orlic, Jean-François Legier, Erick Paleczny, Luc Dubois, Philippe Coquet, Nicolas Tiercelin, Sami Hage-Ali, Philippe Pernod, Vladimir Preobrazhensky, Tuami Lasri

Des lignes coplanaires sont réalisées sur un film souple de Polydimethylsiloxane (PDMS) de 182 μm d'épaisseur. Après avoir mesuré les paramètres [S] de ces lignes, des algorithmes ajustent la permittivité complexe du matériau pour que les valeurs des constantes de propagation extraites des…

13èmes Journées de Caractérisation Microondes et Matériaux, JCMM2014, 2014, Nantes, France. article 9, 4 p. ⟨hal-01005731⟩