科研之友
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摘要
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 degrees-bending wave guide is demonstrated with nearly perfect transmissions for Gaussian beams at a wide range of incident angles. A 90 degrees-bended imaging for a point source with a subwavelength resolution of 0.37 lambda(0) is also realized by the proposed structure. These results will find applicability in the manipulation of acoustic waves by sonic crystals.
- 出版日期2011-8-1
- 单位吉首大学
