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Anisotropic metamaterials for full control of acoustic waves

Anisotropic metamaterials for full control of acoustic waves
Anisotropic metamaterials for full control of acoustic waves
We study a class of acoustic metamaterials formed by layers of perforated plates and producing negative refraction and backward propagation of sound. A slab of such material is shown to act as a perfect acoustic lens, yielding images with subwavelength resolution over large distances. Our study constitutes a nontrivial extension of similar concepts from optics to acoustics, capable of sustaining negative refraction over extended angular ranges, with potential application to enhanced imaging for medical and detection purposes, acoustofluidics, and sonochemistry.
Christensen, Johan
57ceb605-dc34-4c7b-ae49-5fa9ceb52da8
García de Abajo, F.
e0e4fb1e-d807-4c42-b5de-0d9d92942dca
Christensen, Johan
57ceb605-dc34-4c7b-ae49-5fa9ceb52da8
García de Abajo, F.
e0e4fb1e-d807-4c42-b5de-0d9d92942dca

Christensen, Johan and García de Abajo, F. (2012) Anisotropic metamaterials for full control of acoustic waves. Physical Review Letters, 108 (12), [124301]. (doi:10.1103/PhysRevLett.108.124301).

Record type: Article

Abstract

We study a class of acoustic metamaterials formed by layers of perforated plates and producing negative refraction and backward propagation of sound. A slab of such material is shown to act as a perfect acoustic lens, yielding images with subwavelength resolution over large distances. Our study constitutes a nontrivial extension of similar concepts from optics to acoustics, capable of sustaining negative refraction over extended angular ranges, with potential application to enhanced imaging for medical and detection purposes, acoustofluidics, and sonochemistry.

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Published date: 23 March 2012
Organisations: Optoelectronics Research Centre
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Identifiers

Local EPrints ID: 337813
URI: http://eprints.soton.ac.uk/id/eprint/337813
DOI: doi:10.1103/PhysRevLett.108.124301
PURE UUID: 8a266338-c1c9-4d6f-9bc4-348b7b8180bb

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Date deposited: 03 May 2012 14:17
Last modified: 14 Mar 2024 10:58

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Contributors

Author: Johan Christensen
Author: F. García de Abajo

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