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

Johan Christensen; L Martín-Moreno; F. J. García-Vidal

doi:10.1063/1.3491289

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

Johan Christensen, L Martín-Moreno, F. J. García-Vidal

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

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.

Original language	English
Article number	134106
Journal	Applied Physics Letters
Volume	97
Issue number	13
Number of pages	3
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.3491289
Publication status	Published - 2010
Externally published	Yes

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

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