Anisotropic metamaterials for full control of acoustic waves
Christensen, Johan and García de Abajo, F. (2012) Anisotropic metamaterials for full control of acoustic waves. Physical Review Letters, 108, (12), 124301-[5 pages] . (doi:10.1103/PhysRevLett.108.124301).
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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.
|Digital Object Identifier (DOI):||doi:10.1103/PhysRevLett.108.124301|
|Subjects:||Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
|Divisions:||Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
|Date Deposited:||03 May 2012 14:17|
|Last Modified:||14 Apr 2014 11:40|
NANOSTRUCTURED PHOTONIC METAMATERIALS
Funded by: EPSRC (EP/G060363/1)
Led by: Nikolay Zheludev
1 January 2010 to 31 December 2015
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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