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Affichage de 6751 à 6760 sur 16165

Article dans une revue

Enhancement of energy storage in epitaxial PbZrO3 antiferroelectric films using strain engineering

Jun Ge, Denis Remiens, Xianlin Dong, Ying Chen, Jean Costecalde, Feng Gao, Fei Cao, Genshui Wang

We demonstrate an approach to enhance the energy storage density W of antiferroelectric film through simple altering a crystallographic orientation of the substrate. We reveal that the antiferroelectric phase stability of PbZrO3 can be enhanced for the (110) or (111) SrTiO3 substrate orientation,…

Applied Physics Letters, 2014, 105 (11), pp.112908. ⟨10.1063/1.4896156⟩. ⟨hal-03525829⟩

Article dans une revue

Cyclones and attractive streaming generated by acoustical vortices

Antoine Riaud, Michael Baudoin, Jean-Louis Thomas, Olivier Bou Matar

Acoustical and optical vortices have attracted great interest due to their ability to capture and manipulate particles with the use of radiation pressure. Here we show that acoustical vortices can also induce axial vortical flow reminiscent of cyclones, whose topology can be controlled by adjusting…

Physical Review E : Statistical, Nonlinear, and Soft Matter Physics [2001-2015], 2014, 90, 013008, 8 p. ⟨10.1103/PhysRevE.90.013008⟩. ⟨hal-01056959⟩

Article dans une revue

Interface dipole : effects on threshold voltage and mobility for both amorphous and poly-crystalline organic field effect transistors

C. Celle, C. Suspène, M. Ternisien, S. Lenfant, David Guérin, K. Smaali, K. Lmimouni, J.P. Simonato, Dominique Vuillaume

We report a detailed comparison on the role of a self-assembled monolayer (SAM) of dipolar molecules on the threshold voltage and charge carrier mobility of organic field-effect transistor (OFET) made of both amorphous and polycrystalline organic semiconductors. We show that the same relationship…

Organic Electronics, 2014, 15, pp.729-737. ⟨10.1016/j.orgel.2014.01.003⟩. ⟨hal-00939052⟩

Article dans une revue

Dual mechanical behaviour of hydrogen in stressed silicon nitride thin films

F. Volpi, M. Braccini, Arnaud Devos, G. Raymond, A. Pasturel, Pascal Morin

In the present article, we report a study on the mechanical behaviour displayed by hydrogen atoms and pores in silicon nitride (SiN) films. A simple three-phase model is proposed to relate the physical properties (stiffness, film stress, mass density, etc.) of hydrogenated nanoporous SiN thin films…

Journal of Applied Physics, 2014, 116 (4), pp.043506. ⟨10.1063/1.4887814⟩. ⟨hal-01053211⟩

Communication dans un congrès

Near-field Microwave Microscopy for Liquid Characterization

Sijia Gu, Kamel Haddadi, Tuami Lasri

A near-field microwave microscopy platform for the characterization of liquids is proposed. The technique is based on the association of a network analyzer and an evanescent microwave coaxial probe. The major feature of the system proposed is the development of a broadband tunable matching network…

44th European Microwave Conference (EuMC), Oct 2014, Rome, Italie. pp.628--631. ⟨hal-03224672⟩

Article dans une revue

Insulin loaded iron magnetic nanoparticle–graphene oxide composites: synthesis, characterization and application for in vivo delivery of insulin

Kostiantyn Turcheniuk, Manakamana Khanal, Anastasiia Motorina, Palaniappan Subramanian, Alexandre Barras, Vladimir Zaitsev, Victor Kuncser, Aurel Leca, Alain Martoriati, Katia Cailliau-Maggio, Jean-Francois Bodart, Rabah Boukherroub, Sabine Szunerits

One of the focal subjects in insulin delivery is the development of insulin formulations that protect the native insulin from degradation under acidic pH in the stomach. In this work we show, for the first time, that a graphene oxide (GO) based matrix can ensure the stability of insulin at low pH.…

RSC Advances, 2014, RSC Advances, 4 (2), pp.865-875. ⟨10.1039/C3RA46307A⟩. ⟨hal-03103275⟩

Article dans une revue

Broadband attenuation of Lamb waves through a periodic array of thin rectangular junctions

Rayisa P. Moiseyenko, Yan Pennec, Rémi Marchal, Bernard Bonello, Bahram Djafari-Rouhani

We study theoretically subwavelength physical phenomena, such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) of rectangular holes. The resonances and antiresonances of periodically…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90 (13), pp.134307. ⟨10.1103/PhysRevB.90.134307⟩. ⟨hal-01233804⟩

Article dans une revue

Evaluation de la peau du béton à l'aide de la technique des ondes ultrasonores de surface

Bogdan Piwakowski, Jean-Paul Balayssac, Géraldine Villain, Vincent Garnier, Mariusz Kaczmarek, Radoslaw Drelich

Concrete cover degradation is induced by aggressive agents in ambiance, chemicals, moisture, or temperature variations. Due to these degradations, a thin inhomogeneous surface layer usually appears. Its porosity and its elastic modulus are different from the properties of deeper sound concrete.…

Annales du Bâtiment et des travaux publics, 2014, Partie 1 - Évaluation non destructive des matériaux, 66 (1-3), pp.83-88. ⟨hal-03589192⟩

Communication dans un congrès

Monte Carlo study of low and high-field electron transport in GaN-based heterostructures

Jean-Luc Thobel, François Dessenne, Christophe Dalle

Electron transport properties of GaN-based heterostructures are investigated by means of a Monte Carlo model, which considers a large number of subbands in several valleys. Room-temperature low-field mobility consistent with experimental results is obtained provided that screening of phonon…

17th International Workshop on Computational Electronics, IWCE 2014, 2014, Paris, France. paper D2, 4 p., ⟨10.1109/IWCE.2014.6865820⟩. ⟨hal-01005719⟩

Article dans une revue

On detection method for soft iterative decoding in the presence of impulsive interference

Vincent Dimanche, Alban Goupil, Laurent Clavier, Guillaume Gelle

This paper deals with the performance improvement of soft iterative decoders in impulsive interference modeled by additive noise. In case of $alpha$-stable noise, the inputs of the belief propagation decoder are too complex to compute. We propose to use an approximation of the log likelihood ratio…

IEEE Communications Letters, 2014, 18, pp.945-948. ⟨10.1109/LCOMM.2014.2320921⟩. ⟨hal-01005616⟩