All-angle blockage of sound by an acoustic double-fishnet metamaterial | Zendy

Johan Christensen | Zendy; L. Martı́n-Moreno | Zendy; F. J. GarcíaVidal | Zendy

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All-angle blockage of sound by an acoustic double-fishnet metamaterial

Author(s) -

Johan Christensen,

L. Martı́n-Moreno,

F. J. GarcíaVidal

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3491289

Subject(s) - metamaterial , acoustic metamaterials , broadband , attenuation , materials science , acoustic attenuation , acoustics , bandwidth (computing) , acoustic dispersion , acoustic wave , dispersion (optics) , optics , sound (geography) , optoelectronics , physics , telecommunications , computer science

3 páginas, 4 figuras.In this paper we design an acoustic metamaterial for broadband sound blockage that is easy to fabricate and presents tunable capabilities. Two adjacent holey plates are predicted to support a gap mode which is responsible of a forbidden band, displaying a negative effective bulk modulus. This acoustic metamaterial exhibits a weak dispersion with parallel momentum implying that strong attenuation appears for a broad range of angles of incident sound. Its bandwidth can be tailored at will by varying the separation between the two holey plates.This work was financially supported by the Spanish\udMinistry of Science and Innovation under Project Nos.\udMAT2008-06609-C02 and CSD2007-046-NanoLight.es. J.C.\udgratefully acknowledges financial support from the Carlsberg\udFoundation under QUANTONICS Contract No. 2009-01-\ud0167.Peer reviewe

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