Sonic crystal with open resonant cavities

被引：10
|
作者：
Hou, Zhilin [1 ]
Liu, Jingtao
Kuang, Weimin
Liu, Youyan
Wu, Shuizhu
机构：
[1] S China Univ Technol, Dept Phys, Guangzhou 510640, Peoples R China
[2] Univ Henri Poincare, LPMIA, F-54506 Vandoeuvre Les Nancy, France
[3] S China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China
[4] S China Univ Technol, Dept Polymer Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China
来源：
PHYSICAL REVIEW E | 2007年 / 75卷 / 02期
关键词：
D O I：
10.1103/PhysRevE.75.026608
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
An improved scattering matrix method is developed to study a two-dimensional air-rigid sonic crystal with open resonant cavity, and the band structure and transmission properties are investigated. Numerical results show that both the band structure and the transmission coefficient are sensitive to the shape of the resonant cavity. The relationship between the resonant band gap and the shape of the resonant cavity is given. The high effective refractive index and the transmission ratio in the long wave range make such a system a good material for a sound lens.
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页数：7
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