Numerical investigation of the propagation of elastic wave modes in a one-dimensional phononic crystal plate coated on a uniform substrate

被引：32

作者：

Hou, Zhilin ^{[1
,2
]}

Assouar, Badreddine M. ^{[1
]}

机构：

[1] Univ Nancy 1, CNRS, LPMIA, F-54506 Vandoeuvre Les Nancy, France

[2] S China Univ Technol, Dept Phys, Guangzhou 510640, Guangdong, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2009年 / 42卷 / 08期

关键词：

BAND-GAPS;

D O I：

10.1088/0022-3727/42/8/085103

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The propagation of wave modes in a two-layer free standing plate composed of a one-dimensional phononic crystal (PC) thin layer coated on a uniform substrate was investigated numerically by the modified plane wave expansion method. The band structures of the system with different thicknesses of the substrate were calculated. The numerical result showed that Bragg scattering by the periodic structure in a PC and wave scattering by the free surface could be coupled to each other with an added substrate layer. The properties of the confined modes in such a system, for example, the Love-wave-like mode, the confined PC mode (which is localized mainly in the PC layer) and the surface mode on the free surface of the substrate layer, were investigated.

引用

页数：7

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