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Affichage de 5111 à 5120 sur 16135

Article dans une revue

Compact Waveguide and Guided Beam Pattern Based on the Whispering-Gallery Mode of a Hollow Pillar in a Phononic Crystal Plate

Weitao Yuan, Jinfeng Zhao, Bernard Bonello, Bahram Djafari-Rouhani, Xiaoqing Zhang, Yongdong Pan, Zheng Zhong

We report on the experimental evidence of the guiding of the lowest order antisymmetric Lamb mode (A0) through a compact waveguide consisting of aligned hollow pillars in between a square-latticed array of solid pillars on a thin slab. We analyze both numerically and experimentally the guiding…

Physical Review Applied, 2018, 10 (3), pp.034010. ⟨10.1103/PhysRevApplied.10.034010⟩. ⟨hal-01905839⟩

Article dans une revue

Influence of capillarity and gravity on confined Faraday waves

S. Diwakar, Vibhor Jajoo, Sakir Amiroudine, Satoshi Matsumoto, Ranga Narayanan, Farzam Zoueshtiagh

Experiments characterizing the influence of gravity and interfacial tension on Faraday instability in immiscible, confined fluid layers are presented. The variation in interfacial tension was obtained by controlling the temperature of a suitable binary fluid pair while the influence of gravity was…

Physical Review Fluids, 2018, 3 (7), ⟨10.1103/PhysRevFluids.3.073902⟩. ⟨hal-03185122⟩

Communication dans un congrès

Indoor 100 Gbit/s THz data link in the 300 GHz band using fast photodiodes

Vinay Kumar Chinni, Malek Zegaoui, Christophe Coinon, X. Wallart, Emilien Peytavit, Jean-Francois Lampin, P. Szriftgiser, Mohammed Zaknoune, Guillaume Ducournau

This paper presents recent achievements towards 100 Gbit/s data links for future 300 GHz communication systems with the new IEEE 802.15.3d standard. Resonant photodiodes structures, and their application for QAM-16 data links in the THz range are shown in indoor scenario.

25th International Conference on Telecommunications (ICT), Jun 2018, Saint Malo, France. pp.288-290, ⟨10.1109/ICT.2018.8464945⟩. ⟨hal-03286177⟩

Article dans une revue

Trapped-mode-induced Fano resonance and acoustical transparency in a one-dimensional solid-fluid phononic crystal

Ilyasse Quotane, El Houssaine El Boudouti, Bahram Djafari-Rouhani

We investigate theoretically and numerically the possibility of existence of Fano and acoustic-induced transparency (AIT) resonances in a simple though realistic one-dimensional acoustic structuremade of solid-fluid layers inserted between two fluids. These resonances are obtained by combining…

Physical Review B, 2018, 97 (2), ⟨10.1103/PhysRevB.97.024304⟩. ⟨hal-03183494⟩

Chapitre d'ouvrage

Chapter 5 - Transmission in 2D phononic crystals and acoustic metamaterials

Yan Pennec, Bahram Djafari-Rouhani, Abdellatif Akjouj, Gaëtan Lévêque, El Houssaine El Boudouti, Housni Al-Wahsh, L. Dobrzynski

In this chapter we describe the basic concepts of two-dimensional (2D) phononic crystals. We start with a detailed presentation of the elementary methods for the calculation of band structures and transmission phenomena which have proven their efficiency in the literature. We respectively present…

Phononics: interface transmission tutorial book series, Elsevier, pp.271-373, 2018, ISBN 978-0-12-809948-3 ; e-ISBN 978-0-12-809931-5. ⟨10.1016/B978-0-12-809948-3.00005-3⟩. ⟨hal-03356298⟩

Article dans une revue

Zipping-Depinning: Dissolution of Droplets on Micropatterned Concentric Rings

José Encarnación Escobar, Erik Dietrich, S. Arscott, Harold J. W. Zandvliet, Xuehua Zhang, Detlef Lohse

The control of the surface wettability is of great interest for technological applications as well as for the fundamental understanding of surface phenomena. In this article, we describe the dissolution behavior of droplets wetting a micropatterned surface consisting of smooth concentric circular…

Langmuir, 2018, 34 (19), pp.5396-5402. ⟨10.1021/acs.langmuir.8b00256⟩. ⟨hal-02345376⟩

Article dans une revue

Ferroelastic relaxation at 20 GHz evidenced by large frequency range picosecond acoustics

Arnaud Devos, F. Casset, G. Le Rhun, P. Emery, S. Fanget, E. Defay

We present a method to perform elastic measurements on a thin-film as a function of frequency between a few GHz and a few hundred GHz. The technique is mainly based on Picosecond Acoustics (PA), which is an ultrafast optical technique that realizes pulse-echo measurements in the hypersonic range.…

Applied Physics Letters, 2018, 112 (26), ⟨10.1063/1.5035479⟩. ⟨hal-03183473⟩

Article dans une revue

Voltage controlled sub-THz detection with gated planar asymmetric nanochannels

H. Sanchez-Martin, J. Mateos, J. A. Novoa, J. A. Delgado-Notario, Y. M. Meziani, S. Perez, H. Theveneau, Guillaume Ducournau, Christophe Gaquière, T. Gonzalez, I. Iniguez-De-La-Torre

This letter reports on room temperature sub-THz detection using self-switching diodes based on an AlGaN/GaN heterostructure on a Si substrate. By means of free-space measurements at 300 GHz, we demonstrate that the responsivity and noise equivalent power (NEP) of sub-THz detectors based on planar…

Applied Physics Letters, 2018, 113 (4), ⟨10.1063/1.5041507⟩. ⟨hal-03183499⟩

Article dans une revue

Magnetoplasmonic nanograting geometry enables optical nonreciprocity sign control

L. Halagačka, Mathias Vanwolleghem, Francois Vaurette, J. Ben Youssef, K. Postava, J. Pištora, Béatrice Dagens

We experimentally demonstrate a disruptive approach to control magnetooptical nonreciprocal effects. It has been known that the combination of a magneto-optically (MO) active substrate and extraordinary transmission (EOT) effects through deep-subwavelength nanoslits of a noble metal grating, leads…

Optics Express, 2018, 26 (24), pp.31554. ⟨10.1364/OE.26.031554⟩. ⟨hal-03084454⟩

Communication dans un congrès

Wireless Sensor Network used to improve the energy efficiency in connected railway vehicles

Ulrich Biaou, Michael Bocquet, Atika Rivenq, Sara Iben Jellal, S. Baranowski

This paper presents a solution using Zigbee network for improving energy efficiency inside railway vehicles, especially for suburban train and metro. We present firstly a comparison between existing wireless technologies and the choice for our platform. The simulation tools simuEM3D has been used…

30th International Conference on Microelectronics, ICM 2018, Dec 2018, Sousse, Tunisia. pp.72-75, ⟨10.1109/ICM.2018.8704086⟩. ⟨hal-03528695⟩