Publicaciones

• Article dans une revue

Evidence of an impurity band at an n-GaN/sapphire interface

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

We report on temperature-dependent differential Hall-effect and resistivity measurements, between 10 and 300 K, on a silicon-doped GaN epitaxial layer grown by metalorganic chemical vapor deposition on a sapphire substrate. Reactive ion etching has been used to enable Hall measurements to be taken...

Diamond and Related Materials, 2003, 12 (3-7), pp.1127-1132. ⟨10.1016/S0925-9635(02)00395-3⟩. ⟨hal-02906520⟩

• Article dans une revue

Statistical Estimation of Fast Varying Channels for Cellular Mobile Telecommunications Systems

Iyad Dayoub, M. Zaizouni, Atika Rivenq, Jean-Michel Rouvaen

The time variant environment in fast channels severely impacts on the performances of classical equal-ization techniques. A method is proposed here to circumvent this problem, particularly in the severe channel with fast behaviour. To improve the Bit Error Rate (BER) at the receiver, a new approach...

Wireless Personal Communications, 2003, 24 (4), pp.527-536. ⟨10.1023/A:1023275221420⟩. ⟨hal-03508978⟩

• Article dans une revue

Adsorption behavior of conjugated {C}3-oligomers on Si(100) and HOPG surfaces

Gauthier Mahieu, B. Grandidier, Didier Stiévenard, Christophe Krzeminski, Christophe Delerue, C. Martineau, Jean Roncali

A pi-conjugated {C}3h-oligomer involving three dithienylethylene branches bridged at the meta positions of a central benzenic core has been synthesized and deposited either on the Si(100) surface or on the HOPG surface. On the silicon surface, scanning tunneling microscopy allows the observation of...

Langmuir, 2003, 19 (8), pp.3350-3356. ⟨10.1021/la026907n⟩. ⟨hal-00688536⟩

• Article dans une revue

Dimensionality-dependent self energy corrections and exchange-correlation potential in semiconductor nanostructures

Christophe Delerue, Guy Allan, Michel Lannoo

We study the quasiparticle gap in semiconductor nanostructures versus dimensionality and compare it to the value obtained in the local density approximation. We first develop general arguments based on the GW approach which we then substantiate numerically by a tight binding version of this theory...

Physical Review Letters, 2003, 90, pp.076803/1-4. ⟨10.1103/PhysRevLett.90.076803⟩. ⟨hal-00146609⟩

• Communication dans un congrès

Microelectromechanical variable-bandwidth if frequency filters with tunable electrostatical coupling spring

Dimitri Galayko, Andreas Kaiser, Lionel Buchaillot, Dominique Collard, Chantal Combi

This paper describes the theory, design and test of a novel architecture of highly-selective micromechanical filters employing electrostatically coupled resonators with floating or biased coupling electrodes. This original method avoids the use of mechanical coupling springs thus extending the...

Micro Electro Mechanical Systems, 2003. MEMS-03 Kyoto. IEEE The Sixteenth Annual International Conference on, Jan 2003, Kyoto, Japan. ⟨10.1109/MEMSYS.2003.1189709⟩. ⟨hal-01522205⟩

• Communication dans un congrès

Résonateurs de Perot-Fabry accordables en fréquence par cristal liquide

Ronan Sauleau, Nicolas Tentillier, Bertrand Splingart, Coquet Philippe

Treizièmes Journées Nationales Micro-ondes (JNM 2003), May 2003, Lille, France. 4 p. ⟨hal-00553231⟩

• Article dans une revue

Near-Field Coupling Between a Printed Antenna and a Fabry-Perot Resonator : Experimental Study of the Radiation Properties at Millimeter Wave Frequencies

Ronan Sauleau, Philippe Coquet, T. Matsui

Microwave and Optical Technology Letters, 2003, 38 (6), pp.438-443. ⟨hal-00553217⟩

• Communication dans un congrès

Assessment of deteriorated concrete cover by high frequency ultrasonic waves

A. Fnine, M. Goueygou, F. Buyle-Bodin, Bogdan Piwakowski

6th International Symposium on Non-Destructive Testing in Civil Engineering, NDT-CE 2003, 2003, Germany. pp.463-469. ⟨hal-00250185⟩

• Communication dans un congrès

Sommation optique de signaux hyperfréquences

N. Breuil, C. Fourdin, P. Nicole, G. Ulliac, Jean-Pierre Vilcot, J. Chazelas

2003, pp.6C-6. ⟨hal-00146559⟩

• Communication dans un congrès

Relationship between porosity, permeability and ultrasonic parameters in sound and damaged mortar

M. Goueygou, Z. Lafhaj, M. Kaczmarek

International Symposium on Non Destructive Testing in Civil Engineering, NDT-CE 2003, 2003, Germany. pp.1-9. ⟨hal-00250178⟩