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Affichage de 6691 à 6700 sur 16142

Article dans une revue

Multi-carrier transmission of vectorial modulation schemes using electronic transceivers at 588 GHz

Guillaume Ducournau, P. Szriftgiser, D. Bacquet, Mohammed Zaknoune, Rédha Kassi, Jean-Francois Lampin

A reported is presented on the first communication system using vectorial modulation schemes above 500 GHz. Using Schottky-based electronic technologies at 588 GHz, potentialities of high-level multicarrier modulation schemes for wireless links are analysed. The wireless link is composed of an…

Electronics Letters, 2014, 50 (23), pp.1715-1716. ⟨10.1049/el.2014.3652⟩. ⟨hal-03286166⟩

Communication dans un congrès

Highly tunable Fabry-Perot resonators using piezoelectric phononic crystals

Bertrand Dubus, Marie -Fraise Ponge, Anne-Christine Hladky, Jerome O. Vasseur, Mai Phamthi

Theoretical and experimental analyses of piezoelectric stacks submitted to periodical electrical boundary conditions via electrodes, are conducted. These structures are shown to exhibit Bragg band gaps which are switched on or off by setting electrodes in short or open circuit. Band gap frequency…

IEEE International Ultrasonics Symposium (IUS), Sep 2014, Chicago, United States. paper 5B-6, 154-157, ⟨10.1109/ULTSYM.2014.0039⟩. ⟨hal-03300131⟩

Communication dans un congrès

Sensing light and sound velocities of liquids in two-dimensional phoxonic crystals

Samira Amoudache, Rayisa Moiseyenko, Yan Pennec, Bahram Djafari-Rouhani, Antoine Khater, Ralf Lucklum, Rachid Tigrine

We study theoretically the potentiality of dual phononic-photonic (the so-called phoxonic) crystals for liquid sensing applications. We investigate the existence of well-defined features (peaks or dips) in the transmission spectra of acoustic and optical waves and estimate their sensitivity to the…

SPIE Smart Structures/NDE 2014, Conference 9062 - Smart Sensor Phenomena, Technology, Networks, and Systems Integration VII, 2014, San Diego, United States. 90620S, 8 p., ⟨10.1117/12.2044855⟩. ⟨hal-00978927⟩

Communication dans un congrès

«Nanostructured Lead-Free La₂Ti₂O₇ Piezoelectric Islands Obtained by Ion-Beam Etching»

R. Desfeux, A. Ferri, S. Saitzek, Z. Shao, A. Bayart, J. Costecalde, D. Deresmes, David Troadec, Denis Remiens

no abstract

International Conference Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials – PFM 2014, 2014, Ekaterinburg, Russia. ⟨hal-01702958⟩

Autre publication scientifique

Étude théorique et modélisation par la méthode FDTD de nanostructures plasmoniques : application à la conception de biocapteurs

Ophélie Saison-Francioso

Ce travail de thèse est une contribution à l'étude des propriétés optiques de structures plasmoniques composées de nanoparticules métalliques. Il s'appuie sur diverses simulations numériques réalisées à l'aide de la méthode des différences finies dans le domaine temporel ou FDTD (…

2014. ⟨hal-01010025⟩

Article dans une revue

Young's modulus extraction of epitaxial heterostructure AlGaN/GaN for MEMS application

Achraf Ben Amar, Marc Faucher, Virginie Brandli, Yvon Cordier, Didier Theron

This paper presents a Young's modulus extraction method for thin film group III-nitrides materials such as GaN, AlN, and its ternary AlGaN. The AlGaN/GaN heterostructures are grown by molecular beam epitaxy on Si (111) substrate and designed for MEMS applications. Various cantilevers with a…

Physica Status Solidi A (applications and materials science), 2014, 211, pp.1655-1659. ⟨10.1002/pssa.201330339⟩. ⟨hal-01044844⟩

Article dans une revue

Surface asymmetry of coated spherical nanoparticles

Amélie H.R. Koch, Gaëtan Lévêque, Sebastian Harms, Karmena Jaskiewicz, Max Bernhardt, Andreas Henkel, Carsten Sönnichsen, Katharina Landfester, George Fytas

We validate the nonspherical grafting arrangement of isotropically coated spherical nanoparticles as very recently proposed. We utilize localized surface plasmon resonance enhanced dynamic polarized and depolarized light scattering from Au nanoparticles, the spherical symmetry of which was revealed…

Nano Letters, 2014, 14, pp.4138-4144. ⟨10.1021/nl501783x⟩. ⟨hal-01044850⟩