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Affichage de 6801 à 6810 sur 16261

Communication dans un congrès

Broadband sound shielding of Lamb waves through a periodic array of junctions

R.P. Moiseyenko, Yan Pennec, R. Marchal, B. Bonello, Bahram Djafari-Rouhani

We study theoretically sub-wavelength physical phenomena such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) of rectangular holes. One of the main results is the demonstration of a…

2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics, METAMATERIALS 2014, Aug 2014, Copenhagen, Denmark. pp.100-102, ⟨10.1109/MetaMaterials.2014.6948609⟩. ⟨hal-03508189⟩

Communication dans un congrès

Microscopie champ proche micro-ondes pour la caractérisation de liquides

Sijia Gu, Kamel Haddadi, Tuami Lasri

Une plate-forme de microscopie champ proche micro-ondes pour la caractérisation de liquides est proposée. La technique est basée sur l'association d'un analyseur de réseau micro-ondes et d'une sonde coaxiale évanescente. Le principe du système proposé est basé sur le développement d…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 4 p. ⟨hal-01020399⟩

Article dans une revue

Optical properties of gallium nitride heterostructures grown on silicon for waveguiding application

Irma Saraswati, Arnaud Stolz, S. Ko, El Hadj Dogheche, Nji Raden Poespawati, Retno Wigajatri, Didier Decoster

Gallium nitride (GaN) on silicon (Si) is governed by the possibility to use this family of semiconductor for novel optoelectronic devices. GaN layers are deposited by MOCVD on silicon Si (111) using AlGaN buffer layer. We have studied the microstructure quality of the films. From SEM, TEM and AFM…

Advanced Materials Research, 2014, 980, pp.41-45. ⟨10.4028/www.scientific.net/AMR.980.41⟩. ⟨hal-01020484⟩

Communication dans un congrès

Phononic crystals patterning by e-beam lithography "dots on the fly" methodology for integration into thermoelectric energy converters

Valeria Lacatena, Maciej Haras, J.F. Robillard, Stéphane Monfray, Thomas Skotnicki, Emmanuel Dubois

A phononic engineered pattern is conceptualized and realized to hinder the phonons propagation and reduce the lattice thermal conductivity. The pattern fabrication methodology is shown and the procedure of integration on suspended membrane for thermal conductivity characterization is depicted. The…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 3 p. ⟨hal-01020281⟩

Article dans une revue

Interferometric technique for scanning near-field microwave microscopy applications

Hind Bakli, Kamel Haddadi, Tuami Lasri

An interferometric technique for scanning near-field microscopy applications is proposed. The method is based on the association of a vector network analyzer, an evanescent microwave coaxial probe and a precise interferometer built up with a power divider, a phase-shifter, and an attenuator.…

IEEE Transactions on Instrumentation and Measurement, 2014, 63, pp.1281-1286. ⟨10.1109/TIM.2013.2296416⟩. ⟨hal-00980043⟩

Communication dans un congrès

CIGSe absorber layers deposition by single target magnetron sputtering

R. Meunier, S. Fabert, M. Ricci, P.Y. Thoulon, Thomas Aviles, Jean-Pierre Vilcot, Alain Lafond, Michèle Carette, Pierre-Yves Jouan, Marie-Paule Besland

In the last decades, the deposition of CIGSe thin films by sputtering has seldom been investigated. Besides, the sputtering of a single quaternary CIGSe target would be a real advantage for industrial development. Indeed, sputtering technique exhibits a good compatibility with industrial up-scaling…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium A - Thin film chalcogenide photovoltaic materials, 2014, Lille, France. ⟨hal-00964175⟩

Communication dans un congrès

Transmission and attenuation of Lamb waves through a periodic array of rectangular slits in a plate

Rayisa P. Moiseyenko, Yan Pennec, Rémi Marchal, Bernard Bonello, Bahram Djafari-Rouhani

Acoustic wave transmission through sub-wavelength slits or holes, then on layers of periodically spaced cylinders and double fishnet structures, known as acoustic metamaterials has been studied in many works in relation with physical phenomena such as extraordinary resonant transmission, sound…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00964109⟩

Communication dans un congrès

Tailoring thermal conductivity of graphene via defect-and-molecular engineering

Stefan Bringuier, J.F. Robillard, Pierre Deymier, Krishna Muralidharan

The exceptional thermal properties of graphene have attracted enormous interest over the past decade. Consequently, there is an increased push towards utilizing graphene in thermal-management systems such as thermal interface materials and thermoelectrics. While, many recent investigations have…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00964528⟩

Communication dans un congrès

Theory and simulation of optomechanical effects in phoxonic crystals

Said El-Jallal, Mourad Oudich, Yan Pennec, Abdelkader Makhoute, Jordi Gomis-Bresco, Daniel Navarro-Urrios, Clivia M. Sotomayor Torres, Alejandro Martínez, Bahram Djafari-Rouhani

Phoxonic crystals are periodic structures that can exhibit dual phononic and photonic band gaps, thus allowing the simultaneous confinement of both acoustic and optical waves inside the same defect such as a cavity or a waveguide. Then, one can expect an enhancement of the phonon-photon interaction…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00964102⟩

Communication dans un congrès

A GaN Schottky diode-based analog phase shifter MMIC

Chong Jin, Etienne Okada, Marc Faucher, Damien Ducatteau, Mohammed Zaknoune, Dimitris Pavlidis

A GaN Schottky Diode-based Analog Phase Shifter MMIC of T-topology has been designed for 35 GHz operation. An all E-Beam technology was employed for MMIC realization. The measured, as well modeled small and large-signal diode characteristics were used for evaluating the phase-shifter performance in…

9th European Microwave Integrated Circuit Conference (EuMIC), Oct 2014, Rome, Italy. pp.96-99, ⟨10.1109/EuMIC.2014.6997800⟩. ⟨hal-03286170⟩