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Affichage de 5741 à 5750 sur 16231

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⟩

Communication dans un congrès

Microstructuration of Silicon Surfaces Using Nanoporous Gold Electrodes

E Torralba, Mathieu Halbwax, T El Assimi, V. Magnin, Joseph Harari, Jean-Pierre Vilcot, Sylvain Le Gall, Raphaël Lachaume, C Cachet-Vivier, Stéphane Bastide

Etching is a key process in the fabrication of silicon (Si) microstructures that are essential for several component families used in microelectronics, photonics and photovoltaics, among others. A large variety of microstructuring technologies exists nowadays (e.g. wet/dry etchings based on photo/…

21st Topical Meeting of the International Society of Electrochemistry, ISE, Apr 2017, Szeged, Hungary. pp.31375 - 31375. ⟨hal-01537684⟩

Article dans une revue

A user-friendly guide to the optimum ultraviolet photolithographic exposure and greyscale dose of SU-8 photoresist on common MEMS, microsystems, and microelectronics coatings and materials

Matthieu Gaudet, S. Arscott

Analytical Methods, 2017, 9 (17), pp.2495-2504. ⟨10.1039/C7AY00564D⟩. ⟨hal-02345405⟩

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⟩

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⟩

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⟩