Proceedings ArticleDOI
Channel drop process of elastic wave in a two dimensional phononic crystal
Yan Pennec,Bahram Djafari-Rouhani,J. Vasseur,H. Larabi,Abdelkrim Khelif,Abdelkrim Choujaa,Sarah Benchabane,Vincent Laude +7 more
- Vol. 1, pp 69-72
TLDR
In this paper, the authors considered the possibility of transferring acoustic waves of a given wavelength between two parallel guides created in a phononic crystal and showed that the demultiplexing phenomenon is affected by varying the inner radius of the hollow cylinders.Abstract:
We study theoretically the possibility of transferring acoustic waves of a given wavelength between two parallel guides created in a phononic crystal. The structure considered in this work is composed of a periodic array of steel cylinders in water that displays an absolute bandgap. Within this gap, a full transmission band exists for propagation inside a straight wave guide. We show that by choosing an appropriate coupling structure between two parallel wave guides, one can transfer a particular acoustic wavelength from one guide to the other. The coupling element is composed of two hollow cylinders interacting with four other hollow cylinders located at each side of the wave guides. We discuss how the demultiplexing phenomenon is affected by varying the inner radius of the hollow cylinders. Keywords-component; acoustic waves; phononic crystal; demultiplexerread more
Citations
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Journal ArticleDOI
Experimental realization of phonon demultiplexing in three-dimensions
TL;DR: This work shows the first experimental realization of a three-dimensional, four channel phononic demultiplexer, a device that receives multiple signals and sorts them based on their frequencies into separate channels and can be utilized in acoustic and elastic information processing, nondestructive evaluation and communication applications among others.
Journal ArticleDOI
Experimental realization of phonon demultiplexing in three-dimensions.
TL;DR: In this article, a three-dimensional, four-channel phononic demultiplexer is presented, which can be used in acoustic and elastic information processing, nondestructive evaluation and communication applications among others.
Journal ArticleDOI
Demultiplexing infrasound phonons with tunable magnetic lattices
Audrey A. Watkins,Osama R. Bilal +1 more
TL;DR: In this article, a phonon demultiplexer is proposed to guide and sort infrasound waves into different channels based on their frequencies, by confining meta-atoms (free-floating macroscopic disks with embedded magnets).
Journal ArticleDOI
Analysis of elastic waves transmitted through a 2-D phononic crystal exhibiting negative refraction
TL;DR: A detailed study of the waves at the exit of the PC shows that the plane wave is reconstructed after several wavelengths, and the description of the refracted waves is interpreted using a point source array, giving information about the angular spreading and the relative amplitude of each refracted beam.
Dissertation
Cristaux phononiques et métamatériaux acoustiques : applications aux domaines du guidage, filtrage et de l'isolation phonique
TL;DR: In this paper, the authors investigate the existence of bandes interdites in a cristal phononique 2D with cylindres d'acier dans l'eau and notamment an application originale au demultiplexage.
References
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Journal ArticleDOI
Absorbing Boundary Conditions for the Finite-Difference Approximation of the Time-Domain Electromagnetic-Field Equations
TL;DR: In this paper, highly absorbing boundary conditions for two-dimensional time-domain electromagnetic field equations are presented for both two-and three-dimensional configurations and numerical results are given that clearly exhibit the accuracy and limits of applicability of these boundary conditions.
Journal ArticleDOI
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TL;DR: This work presents the first cull band-structure calculations for periodic, elastic composites and obtains a «phononic» band gap which extends throughout the Brillouin zone.
Journal ArticleDOI
Band structure of elastic waves in two dimensional systems
TL;DR: In this paper, the band structure of acoustic and elastic waves propagating in two dimensional periodic fluid or solid systems is calculated, and the authors show that gaps are obtained easily, in contrast to the case of solids, where a large density mismatch is required.
Journal ArticleDOI
Channel Drop Tunneling through Localized States
TL;DR: In this paper, a general analysis of the tunneling process through localized resonant states between onedimensional continuums is presented, where the degeneracy must exist in both the real and imaginary parts of the frequency.
Journal ArticleDOI
Guiding and bending of acoustic waves in highly confined phononic crystal waveguides
TL;DR: In this paper, the authors demonstrate the guiding and bending of acoustic waves in highly confined waveguides formed by removing rods from a periodic two-dimensional lattice of steel cylinders immersed in water.