Publications

• Communication dans un congrès

Inversion of V(z) responses for determination Cij elastic constants by using an optimization method on the singularities of the reflection coefficient

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

The measurement of the V(z) curve, also called acoustical material signature has been used to determine cij elastic constants. The method is based on the comparison of measured and calculated R(θ,f) reflection coefficient. The measured R(θ,f) is determined by inversion of the V(z) curve. The cij…

QUANTITATIVE NONDESTRUCTIVE EVALUATION, Jul 2001, Brunswick, United States. pp.1353-1360, ⟨10.1063/1.1472952⟩. ⟨hal-00149914⟩

• Communication dans un congrès

Plastic relaxation mechanisms in systems with a twist-bonded layer

C. Priester, G. Grenet

2002, pp.I13.4. ⟨hal-00149952⟩

• Article dans une revue

Monte Carlo simulation of electron transport in narrow gap heterostructures

Jean-Luc Thobel, Olivier Bonno, François Dessenne, Hervé Boutry

A Monte Carlo method is proposed for the study of in-plane electron transport in narrow gap heterostructures. Special attention is paid to the consequences of the strong nonparabolicity of the conduction band. The electron states are calculated within the framework of envelope function theory,…

Journal of Applied Physics, 2002, 92 (9), pp.5286-5295. ⟨10.1063/1.1511820⟩. ⟨hal-00148646⟩

• Communication dans un congrès

On the physical interest of some numerical methods for wave phase conjugation in active media

A. Merlen, Vladimir Preobrazhensky, Philippe Pernod

2002, pp.208. ⟨hal-00148692⟩

• Communication dans un congrès

A large stepwise motion electrostatic actuator for a wireless mircrorobot

Philippe Basset, A. Kaiser, P. Bigotte, D. Collard, L. Buchaillot

2002, pp.606-609. ⟨hal-00148787⟩

• Article dans une revue

Detection of chemical damage in concrete using ultrasound

S. Ould Naffa, Marc Goueygou, Bogdan Piwakowski, François Buyle-Bodin

This research deals with a non-destructive method for characterizing the degraded cover of concrete structures using high-frequency ultrasound (0.5–1 MHz). Although such a frequency range is unusual in civil engineering, it is well suited to the kind of defect to be detected, as it corresponds to a…

Ultrasonics, 2002, 40 (1-8), pp.247-251. ⟨10.1016/S0041-624X(02)00146-4⟩. ⟨hal-00140147⟩

• Article dans une revue

Process and realization of a three dimensional gold electroplated antenna on a flexible epoxy film for wireless micromotion system

Philippe Basset, Andreas Kaiser, Dominique Collard, Lionel Buchaillot

The process and realization of a light and low resistive antenna for wireless communications by inductive coupling at 13.56 MHz is presented. The antenna is realized on an insulated substrate made of SU-8 resist in order to prevent the losses due to eddy currents from occurring and to strongly…

Journal of Vacuum Science and Technology, 2002, 20 (4), pp.1465-1470. ⟨10.1116/1.1494066⟩. ⟨hal-00148764⟩

• Article dans une revue

La sismique réflexion haute résolution, outil complémentaire du radar géologique pour la reconnaissance des souches superficielles

Bogdan Piwakowski, C. Leonard, Isam Shahrour

Cet article présente une application réussie de l'imagerie sismique réflexion haute résolution (SHR) pour la reconnaissance de couches superficielles. Des progrès récents dans ce domaine ont été accomplis en ce qui concerne les systèmes de mesure, le traitement des signaux et les techniques d…

Revue française de Géotechnique, 2002, 101, pp.23-34. ⟨hal-00140306⟩

• Article dans une revue

Assessment of broadhand ultrasonic attenuation measurements in inhomogeneous media

Marc Goueygou, Bogdan Piwakowski, S. Ould Naffa, François Buyle-Bodin

In this paper, we address the problem of evaluating the acoustic attenuation of “difficult” media, i.e. highly attenuating and scattering media. In a broadband, through transmission setup, the signals acquired from such media are characterized by a poor signal-to-noise ratio. Therefore, an accurate…

Ultrasonics, 2002, 40 (1-8), pp.77-82. ⟨10.1016/S0041-624X(02)00094-X⟩. ⟨hal-00140145⟩

• Communication dans un congrès

Imperfect Return Path Effects on RLCG Model of Single and Coupled Interconnects: Propagation Delay, Rise Time and Crosstalk Prediction

Jean-François Legier, Erick Paleczny, K. El Bouazzati, Denis Deschacht, Fabrice Huret

If we take a look at the latest ITRS 2001 edition[1], we will realize the number and difficulties of technical challenges the semiconductor industry must solve. Traditional scaling which has been at the basis of the semi conductor industry during these last three decades is indeed beginning to show…

SPI: Signal Propagation on Interconnects, Jun 2002, Pisa, Italy. pp.19-21, ⟨10.1109/SPI.2002.258279⟩. ⟨lirmm-00268510⟩