Publicaciones

• Article dans une revue

Ambipolar spin diffusion in p-type GaAs: A case where spin diffuses more than charge

Fabian Cadiz, V. Notot, J. Filipovic, D. Paget, C. Weber, L. Martinelli, A. Rowe, S. Arscott

We investigate the diffusion of charge and spin at 15 K in p-type GaAs, combining transient-grating and energy-resolved microluminescence measurements to cover a broad range of photoelectron density. At very low optical power, in a unipolar nondegenerate regime, charge and spin diffuse at the same...

Journal of Applied Physics, 2017, 122 (9), pp.095703. ⟨10.1063/1.4985831⟩. ⟨hal-02345440⟩

• Article dans une revue

Pillar-type acoustic metasurface

Yabin Jin, Bernard Bonello, Rayisa P. Moiseyenko, Yan Pennec, Olga Boyko, Bahram Djafari-Rouhani

We theoretically investigate acoustic metasurfaces consisting of either a single pillar or a line of identical pillars on a thin plate, and we report on the dependence on the geometrical parameters of both the monopolar compressional and dipolar bending modes. We show that for specific dimensions...

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (10), pp.104311 ⟨10.1103/PhysRevB.96.104311⟩. ⟨hal-01628355⟩

• Communication dans un congrès

A text-dependent speaker-recognition system

Dany Ishac, Antoine Abche, Elie Karam, Georges Nassar, Dorothée Debavelaere-Callens

In this work, a voice recognition approach is developed and presented. It is a based on acquiring the signal of vocal cords' vibrations of a person using a piezoelectric transducer element attached on a collar wrapped around the neck. The recognition is then based on the vocal cords vibrations...

IEEE International Instrumentation and Measurement Technology Conference (I2MTC), May 2017, Torino, Italy. pp.147-152. ⟨hal-03280240⟩

• Communication dans un congrès

The influence of the presence of a defect in a structure on the cross-correlation, application to the tubular structure

Karl Hourany, Youssef Zaatar, Farouk Benmeddour, Emmanuel Moulin, Dorothée Debavelaere-Callens, Jamal Assaad

The aim of this paper is to verify experimentally the constant possibility of performing a Structural Health Monitoring (SHM) in a medium by studying the ambient noise present therein. First, we will illustrate the equivalence between the Green's function and the cross-correlation, then we...

1st International Conference on Sensors, Networks, Smart and Emerging Technologies (SENSET), Sep 2017, Beriut, Lebanon. ⟨10.1109/SENSET.2017.8125066⟩. ⟨hal-03280236⟩

• Communication dans un congrès

Quantitative determination of small dielectric and loss tangent contrasts in liquids

Hind Bakli, Kamel Haddadi

Accurate measurement of dielectric constant and loss tangent in liquid media in the frequency range 2-6 GHz is proposed in this paper. The measurement set-up is based on an open-ended coaxial probe instrumented with a home-made microwave interferometer. The interferometer is used to match the...

IEEE International Instrumentation and Meausurement Technology Conference, IEEE I2MTC 2017, May 2017, Torino, Italy. pp.909-914, ⟨10.1109/I2MTC.2017.7969796⟩. ⟨hal-03224652⟩

• Article dans une revue

Complexity of the hot carrier relaxation in Si nanowires compared to bulk

Jing Li, Yann-Michel Niquet, Christophe Delerue

We investigate the relaxation of hot carriers by emission of phonons in bulk Si and Si nanowires (NWs) with an identical atomistic methodology. The phonon scattering is strongly enhanced in NWs. At high excitation energy, the carrier cooling is faster in NWs than in bulk, mainly due to the coupling...

Physical Review B, 2017, 95 (20), pp.205401. ⟨10.1103/PhysRevB.95.205401⟩. ⟨hal-02015399⟩

• Communication dans un congrès

Passive UHF RFID system evaluation in a retail environment

Hadi Farhat, Plamen Iliev, Philippe Mariage, Nathalie Rolland

The work in this paper presents the study of the influence of a particular environment on the performances of passive UHF RFID tags attached to products presented in a retail store. The effects of the near-field environment and of the far field environment are successively and separately...

2nd International Multidisciplinary Conference on Computer and Energy Science (SpliTech), Jul 2017, Split, Croatia. pp.111-116. ⟨hal-03270105⟩

• Proceedings/Recueil des communications

Non destructive evaluation of bi-material structures: a case study

Lynda Chehami, Nico F. Declercq, Paul Lohmuller, Pascal Pomarede, Boris Pitrowski, Fodil Meraghni, Esam Ahmed Mohamed, Othmane Ez-Zahraouy

Due to their specific elastic properties (high stiffness to mass ratio), regular microstructure materials (architectural materials), are widely used in industry. This work deals with nondestructive evaluation of a 3D bi-material structure made of an architectural ABS polymer embedded in an Epoxy...

pp.045002, 2017, ⟨10.1121/2.0000608⟩. ⟨hal-02354065⟩

• Ouvrages

Un racconto di sette elementi (A Tale of Seven Eelements by Eric Scerri, Oxford University Press, Oxford)

Raffaele Pisano, Paolo Bussotti, Eric Scerri

2017, 978-88-255-0424-8. ⟨hal-04517856⟩

• Article dans une revue

Thermal conductivity of glassy GeTe4 by first-principles molecular dynamics

Assil Bouzid, Hayat Zaoui, Pier Luca Palla, Guido Ori, Mauro Boero, Carlo Massobrio, Fabrizio Cleri, Évelyne Martin

A transient thermal regime is achieved in glassy GeTe4 by first-principles molecular dynamics following the recently proposed “approach-to-equilibrium” methodology. The temporal and spatial evolution of the temperature do comply with the time-dependent solution of the heat equation. We demonstrate...

Physical Chemistry Chemical Physics, 2017, 19 (15), pp.9729-9732. ⟨10.1039/c7cp01063j⟩. ⟨hal-02349381⟩