Publications

• Article dans une revue

Multiple parallel conduction paths observed in depth-profiled n-GaN epilayers

C. Mavroidis, J. Harris, R. Jackman, I. Harrison, B. Ansell, Z. Bougrioua, I. Moerman

We have combined plasma etching with the Hall effect and resistivity measurements between 10 and 300 K to study the depth distribution of conduction in silicon (Si)-doped GaN epitaxial layers grown on sapphire substrates by two different metalorganic chemical vapor deposition processes. Reduction…

Journal of Applied Physics, 2002, 91 (12), pp.9835. ⟨10.1063/1.1477604⟩. ⟨hal-02906594⟩

• Article dans une revue

Photodissociation of hydrogen passivated dopants in gallium arsenide

L. Tong, J.A. Larsson, M. Nolan, M. Murthag, J.C. Greer, M. Barbe, F. Bailly, Jérome Chevalier, S. Sylvestre, D. Loridant-Bernard, E. Constant, M. Constant

A theoretical and experimental study of the photo-dissociation mechanisms of hydrogen passivated n- and p-type dopants in gallium arsenide is presented. The photo-induced dissociation of the SiGa–H complex has been observed for relatively low photon energies (3.48 eV), whereas the photo-…

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2002, 186, pp.234-239. ⟨10.1016/S0168-583X(01)00949-1⟩. ⟨hal-00278930⟩

• Autre publication scientifique

Du modèle de canal de propagation à l'optimisation des systèmes de télécommunications

M. Lienard

2002. ⟨hal-00577049⟩

• Article dans une revue

Actuation performance of embedded piezoceramic transducer in mechanically loaded composites

Christophe Paget, K. Levin, Christophe Delebarre

The performance of embedded piezoceramic transducers (PZTs) used as Lamb wave generators was investigated in this paper. The composite specimens with a PZT embedded in the mid-plane were subjected to tensile and compressive monotonic loading as well as tension–compression fatigue loading. Both the…

Smart Materials and Structures, 2002, 11 (6), pp.886-891. ⟨10.1088/0964-1726/11/6/309⟩. ⟨hal-00149896⟩

• Article dans une revue

DOS optical switch for microwave optical link based applications

Karine Blary, Samuel Dupont, Jean-Pierre Vilcot, Francis Mollot, Didier Decoster, Jean Chazelas

The performance of an InGaAsP/InP digital optical switch (DOS) structure is investigated and discussed when used in microwave over fibre signal transmission. The focus is on on/off ratio as well as phase noise performance of microwave transmitted signals.

Electronics Letters, 2002, 38 (25), pp.1697-1699. ⟨10.1049/el:20021183⟩. ⟨hal-00149641⟩

• Communication dans un congrès

Directional photon transfer between two wires

Abdellatif Akjouj, Bahram Djafari-Rouhani, Jerome O. Vasseur, Mohamed Bouazaoui, Jean-Pierre Vilcot, Arnaud Beaurain, Stefan Mc Murtry, L. Dobrzynski

GDR Ondes, 2002, Orsay, France. ⟨hal-00149655⟩

• Communication dans un congrès

Piezoelectric properties of sputtered PZT films: influence of structure, microstructure, film thickness, (Zr,Ti) ratio and Nb substitution

Denis Remiens, Eric Cattan, Caroline Soyer, T. Haccart

European Materials Research Society Spring Meeting, Symposium P, Advanced Materials for Microelectronics : Ferroelectrics and Low-k Dielectrics, 2002, France. pp.123-127. ⟨hal-00250393⟩

• Communication dans un congrès

Multiple access for 60 GHz mobile ad hoc networks

Christelle Garnier, Laurent Clavier, Yves Delignon, Matthieu Loosvelt, David Boulinguez

This paper analyzes the suitability of various multiple access schemes for a 60 GHz mobile ad hoc network. The investigated techniques include multi-carrier modulation (OFDM-TDMA), the spectrum spreading method (DS-CDMA) and the combined schemes (MC-CDMA, MC-DS-CDMA) benefiting from the advantages…

IEEE 55th Vehicular Technology Conference. VTC Spring 2002, May 2002, Birmingham, AL, United States. pp.1517-1521, ⟨10.1109/VTC.2002.1002870⟩. ⟨hal-00148334⟩

• Communication dans un congrès

Interactions entre les ultrasons et les matrices fromagères

Georges Nassar, Bertrand Nongaillard, C. Achilleos, L. Tessier, Y. Noel

7ème Colloque PROSETIA, Procédés de Séparation et de Transformation dans les Industries Agroalimentaires, 2002, Compiègne, France. ⟨hal-00149925⟩

• Communication dans un congrès

Determination of elastic constants by line-focus acoustic microscopy : effect of initial Cij values on the Simplex method and influence of geometric probe parameters on the Kushibiki method

Michael Lematre, Youssef Benmehrez, G. Bourse, Wei-Jiang Xu, Mohamed Ourak

The velocity of leaky surface acoustic waves (SAWs) is obtained for different directions of propagation (φ) from the V(z) curves by using the Kuschibiki method. The comparison of measured and calculated velocities consists in the minimization of the summation of the square difference Σ|VΦc-VΦm|2 by…

QUANTITATIVE NONDESTRUCTIVE EVALUATION, Jul 2001, Brunswick, United States. pp.1361-1368, ⟨10.1063/1.1472953⟩. ⟨hal-00149917⟩