One-dimensional phononic crystal slabs bordered with asymmetric uniform layers
One-dimensional phononic crystal slabs bordered with asymmetric uniform layers
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DOI：
10.1109/spawda.2011.6167232
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发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
Hong-bo Zhang;Jiujiu Chen
中科院分区：
文献类型：
--
作者：
Hong-bo Zhang;Jiujiu Chen
基于超原胞平面波展开法（SC-PWE）研究了Lamb波在一维声子晶体中的传播。声子晶体板由硅和钨制成。均匀的基底和覆盖层可以是钨层、橡胶层或一个是钨层而另一个是橡胶层。基底的厚度或材料不同于覆层的厚度或材料。用有限元法和Comsol Multiphysics 3.5a软件进行了验证。结果表明，通过改变基片或基片的厚度，可以实现对能带结构的调谐。这些结构可以用作滤波器、传感器或波导。
We study the propagation of Lamb waves in a one-dimensional phononic crystal slabs bordered with asymmetric uniform layers based on the supercell plane wave expansion method (SC-PWE). The phononic crystal slabs are made of silicon and tungsten. The uniform substrate and superstrate layers can be tungsten layer, rubber layer or one is a tungsten layer and another is a rubber layer. The thickness or material of the substrate is different from that of the superstrate. The validity is proved by using the finite-element (FE) method with the Comsol Multiphysics 3.5a. The results show that the band structure can be tuned by changing the thickness of the substrate or the superstrate. These structures may be used as filters, sensors or wave guides.