Influence of lattice symmetry on ultrasound transmission through plates with subwavelength aperture arrays
Influence of lattice symmetry on ultrasound transmission through plates with subwavelength aperture arrays
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DOI：
10.1063/1.3196330
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发表时间：
2009-08
影响因子：
4
通讯作者：
H. Estrada;P. Candelas;A. Uris;F. Belmar;F. García de Abajo;F. Meseguer
中科院分区：
文献类型：
--
作者：
H. Estrada;P. Candelas;A. Uris;F. Belmar;F. García de Abajo;F. Meseguer
本文研究了声波在开有正方形和三角形孔阵的铝板中的传播。我们从理论上和实验上证明了晶格对称性会影响Wood异常的位置和透射峰的宽度。深入讨论了穿孔板中声传播的角度和频率依赖性。最后，我们观察到意想不到的各向异性行为在长波长的兰姆模式带的穿孔板。
We study the transmission of sound waves through aluminum plates perforated with square and triangular hole arrays. We demonstrate both theoretically and experimentally that lattice symmetry affects the position of the Wood anomalies and the width of the transmission peaks. The angle and frequency dependence of sound transmission through perforated plates are thoroughly discussed. Finally, we observe unexpected anisotropic behavior in the long-wavelength Lamb-mode bands of perforated plates.