Acoustic band gaps in three-dimensional CsCl-type periodic liquid composites

被引：1
|
作者：
Fang, Nongyu [1 ]
Wu, Fugen [1 ]
Zhang, Xin [1 ]
Zhong, Huilin [1 ]
Mu, Zhongfei [1 ]
机构：
[1] Guangdong Univ Technol, Dept Expt Educ, Guangzhou 510006, Guangdong, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2008年 / 148卷 / 7-8期
基金：
中国国家自然科学基金;
关键词：
Acoustic properties; Elasticity; Acoustic wave;
D O I：
10.1016/j.ssc.2008.09.020
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Acoustic band gaps (ABGs) in three-dimensional (3D) CsCl-type acoustic crystals consisting of water scatterers embedded in mercury hosts have been studied. By using the super cell method based on the plane-wave expansion, we present three configurations formed by inserting an additional water object (either a sphere or a cube) into the center of each unit cell of a simple cubic (SC) structure. Numerical results show that the CsCl-type acoustic crystals can obtain larger absolute ABGs than the original SC structure, even the body-centered-cubic (BCC) structure. We also compare our results with that of 3D solid composites and find that the ABGs in liquid composites are insensitive to the shapes of scatterers as those in the solid composites. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：267 / 270
页数：4
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