Acoustic stop bands of surface and bulk modes in two-dimensional phononic lattices consisting of aluminum and a polymer
Acoustic stop bands of surface and bulk modes in two-dimensional phononic lattices consisting of aluminum and a polymer
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DOI：
10.1103/physrevb.60.13294
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发表时间：
1999-11
影响因子：
3.7
通讯作者：
Y. Tanaka;S. Tamura
中科院分区：
文献类型：
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作者：
Y. Tanaka;S. Tamura
从理论上研究了由铝和聚合物组成的二维周期性弹性结构中声表面波和体声波禁带的空间和频率分布。该表面垂直于嵌入背景材料中的圆柱体的2D周期性阵列。计算了三角形晶格中波矢平行于表面的表面和体模的色散关系，并以与超声成像实验比较的形式绘制了阻带分布。
Spatial and frequency distributions of forbidden bands of both surface and bulk acoustic waves are studied theoretically for two-dimensional (2D) periodic elastic structures consisting of aluminum and polymer. The surface is perpendicular to the 2D periodic arrays of circular cylinders embedded in a background material. The dispersion relations of the surface and bulk modes with wave vectors parallel to the surface are calculated for triangular lattices, and the stop band distributions are plotted in a form relevant to the comparison with ultrasound imaging experiments.