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Article dans une revue

High reference impedance reflectometer for nonresonant matching of near-field microwave microscope tip probe

D. Glay, A. El Fellahi, T. Lasri

In this letter, we present a nonresonant high impedance reflectometer integrating a tip probe dedicated to near-field microwave microscopy. A 1-kohms reflectometer is fabricated by using lumped elements to validate the approach proposed to solve the problem of impedance mismatch between the probe…

Microwave and Optical Technology Letters, 2014, 56, pp.64-69. ⟨10.1002/mop.28018⟩. ⟨hal-00939056⟩

Communication dans un congrès

Sensing light and sound velocities of fluids in 2D phoxonic crystal slab

Yan Pennec, R. Moiseyenko, Bahram Djafari-Rouhani, S. Amoudache, R. Tigrine, R. Lucklum, A. Khater

We study theoretically the potentiality of dual phononic-photonic (the so-called phoxonic) crystals for sensing applications. In this work, we study the transmission normal to a periodically perforated silicon slab when the surrounding medium is a liquid. We investigate the existence of well-…

13th IEEE SENSORS Conference, SENSORS 2014, Nov 2014, Valencia, Spain. pp.355-357, ⟨10.1109/ICSENS.2014.6985007⟩. ⟨hal-03508195⟩

Communication dans un congrès

Fabrication of magnetoelastic Bragg reflectors for surface acoustic wave applications and investigation of its tuning with constant magnetic field

Anastasia Pavlova, Sergey Yankin, Abdelkrim Talbi, Jean-Claude Gerbedoen

In this work studying of 1D periodic phononic crystal (PnC) fabrication for 2 GHz and 4 GHz on Ni was done experimentally and theoretically using finite element analysis (FEA). Change of crystal acoustic properties in applied magnetic field was evaluated theoretically.

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 3 p. ⟨hal-01020269⟩

Communication dans un congrès

Impact du recuit d'activation sur la passivation par Al2O3 du silicium type p Cz

Matthieu Pawlik, Jean-Pierre Vilcot, Mathieu Halbwax, M. Gauthier, N. Le Quang

L'Al2O3 déposé par ALD est un diélectrique bien connu pour la passivation de surface du silicium type-p. Cependant, une étape de recuit post-dépôt est nécessaire pour activer la passivation. Grâce à des mesures de densités de charges effectives, de défauts d'interface, temps de vie de…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 3 p. ⟨hal-01020286⟩

Article dans une revue

Comparison of shallow-mesa InAs/AlSb HEMTs with and without early-protection for long-term stability against Al(Ga)Sb oxidation

E. Lefebvre, G. Moschetti, M. Malmkvist, L. Desplanque, X. Wallart, J. Grahn

The fabrication process of InAs/AlSb high electron mobility transistors (HEMTs) has been improved by depositing, after the shallow-mesa isolation of the active area, a thin SiNx-film on the exposed AlGaSb mesa floor. Devices with and without this early-protection against Al(Ga)Sb oxidation have…

Semiconductor Science and Technology, 2014, 29, 035010, 7p. ⟨10.1088/0268-1242/29/3/035010⟩. ⟨hal-00941533⟩

Communication dans un congrès

Optical properties of nanoporous gallium nitride for photonic applications

Bandar Alshehri

The aim of this research is to characterize the optical properties of a gallium nitride thin film grown on sapphire by MOCVD. Nanoporous of gallium nitride are formed by electrochemical etching. Refractive index, thickness and birefringence are extracted from the nanoporous thin film. Prism…

17èmes Journées Nationales du Réseau Doctoral en Micro-Nanoélectronique, JNRDM 2014, 2014, Villeneuve d'Ascq, France. 3 p. ⟨hal-01020289⟩

Communication dans un congrès

Effects of Enhanced Image Quality in Infrastructure Monitoring through Micro Aerial Vehicle Stabilization

Chung-Hsin Kuo, Sébastien Kanlanjan, Louis Pagès, Hanadi Menzel, Sascha Power, Chen-Ming Kuo, Christian Boller, Sébastien Grondel

Traditional monitoring of large infrastructure such as towers of churches or for cooling, chimneys or any other type of tall buildings can require extreme effort and hence become very risky and costly since it mainly requires people to be moved around. An interesting alternative in that regard is…

EWSHM - 7th European Workshop on Structural Health Monitoring, IFFSTTAR, Inria, Université de Nantes, Jul 2014, Nantes, France. ⟨hal-01020419⟩

Communication dans un congrès

Experimental demonstration of anomalous nonreciprocal optical response of 1D periodic magnetoplasmonic nanostructures

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

In this paper we analyze the optical and transversal magnetooptical (MO) response of magnetoplasmonic (MP) nanostructures. The MP structure is a 1D periodic gold grating fabricated by lift-off technique on the MO dielectric substrate (Bi-substituted yttrium iron garnet BixY3−xFe5O12). Following our…

SPIE Photonics West, OPTO 2014, Conference 8988 - Integrated Optics : Devices, Materials, and Technologies XVIII, 2014, San Francisco, CA, United States. 89880E, 6 p., ⟨10.1117/12.2039450⟩. ⟨hal-00962382⟩

Communication dans un congrès

Surface acoustic wave bandgaps for conical pillars on a piezoelectric substrate

Abdelali Mrabti, Mourad Oudich, Abdellatif Akjouj, Yan Pennec, Bahram Djafari-Rouhani, Abdelkrim Talbi, Jérémy Streque, Yu Du, Ali Soltani, Philippe Pernod

We report theoretically on the band structure of a square lattice phononic crystal made up of nickel (Ni) conical pillars deposited on the surface of a semi-infinite LiNbO3 substrate. Calculations have been performed with a 3D finite element method taking into account material anisotropy and…

European Materials Research Society Spring Meeting, E-MRS Spring 2014, Symposium D - Phonons and fluctuations in low dimensional structures, 2014, Lille, France. ⟨hal-00962392⟩

Communication dans un congrès

Back-gated microwave field-effect transistors based on transferred CVD-grown graphene

Wei Wei, Mohamed Moez Belhaj, Geetanjali Deokar, D. Mele, Emiliano Pallecchi, Emmanuelle Pichonat, Dominique Vignaud, Henri Happy

Graphene based transistors have drawn growing interest from both industries and Laboratories [1-3]. In this work, we present both fabrication process and characterization of graphene field-effect transistors. Large scale monolayer graphene was grown by chemical vapor deposition (CVD) on Cu foils…

4th Graphene Conference, Graphene 2014, May 2014, Toulouse, France. 2 p. ⟨hal-00962381⟩