Effects of inclusion shapes on the band gaps in two-dimensional piezoelectric phononic crystals

被引：71
|
作者：
Wang, Yi-Ze [1 ]
Li, Feng-Ming [1 ]
Huang, Wen-Hu [1 ]
Wang, Yue-Sheng [2 ]
机构：
[1] Harbin Inst Technol, Sch Astronaut, Harbin 150001, Peoples R China
[2] Jiao Tong Univ, Inst Engn Mech, Beijing 100044, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 49期
关键词：
D O I：
10.1088/0953-8984/19/49/496204
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
In this paper, the elastic wave propagation in piezoelectric phononic crystals with several inclusion shapes is investigated by taking the electromechanical coupling into account. The band structures for five different shapes of scatterers ( regular triangle, square, hexagon, circle, and oval) with square lattice are calculated using the plane-wave expansion method. The effects of the inclusion shapes on the normalized band width are discussed. The largest complete band gap is obtained by selecting the scatterers with the same symmetry of lattice for the first band gap, but this rule is not valid for the second band gap.
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页数：9
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