Band Structure of Three-Dimensional Phononic Crystals with an Opal Structure

被引：1

作者：

Tanaka, Yukihiro ^{[1
]}

Tamura, Shin-ichiro ^{[1
]}

Okada, Takuro ^{[1
]}

机构：

[1] Hokkaido Univ, Dept Appl Phys, Sapporo, Hokkaido 0608628, Japan

来源：

IUTAM SYMPOSIUM ON RECENT ADVANCES OF ACOUSTIC WAVES IN SOLIDS | 2010年 / 26卷

关键词：

COMPOSITES; SCATTERING; WAVES;

D O I：

10.1007/978-90-481-9893-1_18

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

We made a systematic investigation on the band structure of sound waves in three-dimensional phononic crystals consisting of periodic arrays of spheres with an opal structure. The opal structure is made with close-packed solid spheres surrounded by air (or vacuum). We introduce a sintering parameter which characterizes the contact between adjacent spheres. For a proper range of parameters we find the existence of a complete band gap in the structure. We also find that several flat bands appear below the lowest eigenfrequency of vibration of the isolated sphere. To understand the vibrational motion of the modes in these flat bands, their intensity distributions are also shown.

引用

页码：193 / 200

页数：8

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