Publications

Affichage de 12141 à 12150 sur 16443


  • Article dans une revue

In situ epitaxial surface passivation of GaAlN/GaN HEMT heterostructures grown by LP-MOCVD

Marie-Antoinette Di Forte-Poisson, Nicolas Sarazin, M. Magis, Maurice Tordjman, Erwan Morvan, Raphaël Aubry, J. Di Persio, Bertrand Grimbert

This paper reports on in situ passivation studies of GaAlN/GaN High electron mobility transistors (HEMT) structures grown by low-pressure metalorganic vapour phase epitaxy (LP-MOVPE) on sapphire and silicon carbide substrates. GaN, GaAlN, AlN and AlN/GaN superlattice (SL) layers have been deposited…

Journal of Crystal Growth, 2007, 298, pp.826-830. ⟨10.1016/j.jcrysgro.2006.10.193⟩. ⟨hal-00285680⟩

  • Article dans une revue

Selective filtering of confined optical waves in a straight waveguide coupled to a lateral stub

Yan Pennec, Maxime Beaugeois, Bahram Djafari-Rouhani, Abdellatif Akjouj, Jerome O. Vasseur, L. Dobrzynski, Jean-Pierre Vilcot, Mohamed Bouazaoui, J.P. Vigneron

We report numerical simulations, based on a finite difference time domain (FDTD) method, of light propagation in two-dimensional semiconductor micro optical waveguides coupled to one or several lateral stubs. The incident wave which is of transverse magnetic polarization (TM) is either…

Journal of Optics A: Pure and Applied Optics, 2007, 9, pp.S431-S436. ⟨10.1088/1464-4258/9/9/S25⟩. ⟨hal-00285664⟩

  • Article dans une revue

Structural investigation of TbCo2/Fe magnetostrictive thin films by tomographic atom probe and Mössbauer spectrometry

A. Grenier, R. Lardé, E. Cadel, J.M. Le Breton, J. Juraszek, F. Vurpillot, Nicolas Tiercelin, Philippe Pernod, J. Teillet

Journal of Magnetism and Magnetic Materials, 2007, 310, pp.2215-2216. ⟨10.1016/j.jmmm.2006.10.1102⟩. ⟨hal-00285631⟩

  • Article dans une revue

New flowmetric measurement methods of power dissipated by an ultrasonic generator in aqueus medium

Valérie Mancier, Didier Leclercq

Ultrasonics Sonochemistry, 2007, 14, pp.99-106. ⟨10.1016/j.ultsonch.2006.03.004⟩. ⟨hal-00255844⟩

  • Communication dans un congrès

Finite element modelling of guided waves propagation in plates with variable thickness

Frédéric Jenot, Mohammadi Ouaftouh, Mohamed Ourak, Marc Duquennoy, P. Poussot

International Congress on Ultrasonics, ICU 2007, 2007, Austria. CD-ROM, Paper ID 1478, 4p., ⟨10.3728/ICUltrasonic.2007.Vienna.1478_jenot⟩. ⟨hal-00362703⟩

  • Article dans une revue

Picosecond ultrasonic investigations of phonons in 2D nano-scaled lattices

J.F. Robillard, Arnaud Devos, I. Roch-Jeune

Journal of Physics: Conference Series, 2007, 92, pp.012027-1-4. ⟨10.1088/1742-6596/92/1/012027⟩. ⟨hal-00285623⟩

  • Article dans une revue

Transient self-heating effects in multifinger AlGaN/GaN HEMTs, with metal airbridges

J. Kuzmik, S. Bychikhin, R. Lossy, H.J. Würfl, M.A. Di Forte-Poisson, J.P. Teyssier, Christophe Gaquière, D. Pogany

Solid-State Electronics, 2007, 51, pp.969-974. ⟨10.1016/j.sse.2007.04.001⟩. ⟨hal-00283496⟩

  • Article dans une revue

CVD growth of carbon nanotubes at very low pressure of acetylene

Yu.A. Kasumov, A. Shailos, I.I. Khodos, V.T. Volkov, V.I. Levashov, V.N. Matveev, Sophie Guéron, Mathias Kobylko, Mathieu Kociak, Helene Bouchiat, Vincent Agache, Anne-Sophie Rollier, Lionel Buchaillot, Anne Marie Bonnot, A.Yu. Kasumov

We present a new technique for CVD synthesis of carbon nanotubes without any gas flow and using a very low pressure of acetylene (down to 0.5 mbar). The good quality of obtained nanotubes is confirmed by TEM observation and electron diffraction patterns, Raman spectroscopy and electron transport…

Applied physics. A, Materials science & processing, 2007, 88, pp.687-691. ⟨10.1007/s00339-007-4028-3⟩. ⟨hal-00351737⟩

  • Article dans une revue

Low frequency noise in InAlAs/InGaAs modulation doped field effect transistors with 50-nm gate length

M.E. Levinshtein, S.L. Rumyantsev, R. Tauk, S. Boubanga, N. Dyakonova, W. Knap, A. Shchepetov, S. Bollaert, Yannick Roelens, M.S. Shur

Journal of Applied Physics, 2007, 102 (6), pp.064506. ⟨10.1063/1.2781087⟩. ⟨hal-00283040⟩

  • Communication dans un congrès

Impact of interfaces on the dynamic electrical properties of molecular junctions

D. Vuillaume

Princeton Discussions on Organic Materials, Interfaces and Devices, 2007, Princeton, NJ, United States. ⟨hal-00286362⟩