压电
材料科学
带隙
声学
衰减
超晶格
透射系数
铌酸锂
带宽(计算)
有限元法
波导管
光学
光电子学
结构工程
传输(电信)
复合材料
物理
电信
工程类
作者
Guangying Yang,Minghua Zhang,Jianke Du,Xi Chen
标识
DOI:10.1080/15376494.2022.2029637
摘要
The propagation of Love wave in a phononic crystal consisting of superlattice lithium niobate substrate carrying a piezoelectric waveguide layer is analyzed. The interface between the waveguide layer and the substrate is imperfectly bonded, which is described by means of a shear spring model. Numerical results show that the bandgap shifts to a lower frequency range and the bandwidth decreases as the interface imperfection increases. Moreover, the transmission coefficient calculations using finite element simulation revealed that a perfect interface results in more effective bandgap attenuation.
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