Study on the point defect and linear defects in two-dimensional piezoelectric phononic crystals

摘要：

In this paper, the wave propagation and localization in two-dimensional piezoelectric phononic crystals which includes piont defect and linear defects has been studied by using finite-difference time-domain (FDTD) method. The mechanical-electrical coupling has been took into account. Numerical results of point defect modes and transmission coefficients are presented for BaTiO3/polymer piezocomposite. It has proved clearly that the number of defects have pronounced effects on the defect modes and transmission coefficients. We also studied the linear defects, it has been proved by the result that the guided modes can act as a waveguide for acoustic waves in this piezocomposite。

关键词： Piezoelectricity Phononic crystal Localized defect mode FDTD method

作者: Li Jin-Qiang Sun Chun-Chun Li Feng-Ming Wang Yi-Ze

作者单位: The School of Astronautics,Harbin Institute of Technology,Harbin 150001,P R China The School of Astronautics,Harbin Institute of Technology,Harbin 150001,P R China;The Department of

会议类型: 国内会议

会议名称: 第八届全国动力学与控制学术会议

会议地点: 杭州

会议语种:英文

在线出版日期: 2008-07-27（万方平台首次上网日期，不代表论文的发表时间）