期刊
APPLIED PHYSICS LETTERS
卷 98, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3583660
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- National Science Council of Taiwan [NSC 99-2221-E-002-032-MY2]
In this letter, we numerically demonstrate focusing of the lowest antisymmetric Lamb wave in a gradient-index phononic crystal (PC) silicon plate and its application as a beam-width compressor for compressing Lamb wave into a stubbed phononic tungsten/silicon plate waveguide. The results show that beam width of the lowest antisymmetric Lamb wave in the PC thin plate can be compressed efficiently and fitted into tungsten/silicon PC plate waveguide over a wide range of frequency. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3583660]
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