Acoustic guiding and subwavelength imaging with sharp bending by sonic crystal

Details Acoustic guiding and subwavelength imaging with sharp bending by sonic crystal Acoustic guiding and subwavelength imaging with sharp bending by sonic crystal

2011-08-03

arxiv.org/abs/1108.0764v2

Appl. Phys. Lett. 99, 051908 (2011)

Physics

Classical Physics

8 pages, 5 figures

Scientific paper

10.1063/1.3622652

A sharp bending scheme for the self-collimation of acoustic waves is proposed by simply truncating the sonic crystals. An all-angle and wide-band 90{\deg}-bending wave guide is demonstrated with nearly perfect transmissions for Gaussian beams at a wide range of incident angles. A 90{\deg}-bended imaging for a point source with a subwavelength resolution of 0 0.37{\lambda} is also realized by the proposed structure. These results will find applicability in the manipulation of acoustic waves by sonic crystals.

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