Experimental investigation of the acoustic pressure in cavity of a two-dimensional sonic crystal

被引：41

作者：

Wu, Liang-Yu ^{[1
]}

Chen, Lien-Wen ^{[1
]}

Liu, Chia-Ming ^{[2
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan

[2] Ind Technol Res Inst, Nanotechnol Res Ctr, Hsinchu, Taiwan

来源：

PHYSICA B-CONDENSED MATTER | 2009年 / 404卷 / 12-13期

关键词：

Sonic crystal; Resonant cavity; Point defect; DEFECT STATES; BAND-GAPS; MODES; WAVES;

D O I：

10.1016/j.physb.2009.02.025

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The experimental observation of the pressure in the cavity of a 2-D sonic crystal is presented. The sonic crystal consists of the polymethyl methacrylate cylinders in air background. The full band gap and defect mode are demonstrated experimentally and compared with the calculating results. The spectra in the cavity are measured for different sizes of the sonic crystal. The pressure in the cavity and quality factor of the cavity can be enhanced as the sonic crystal is enclosed by the cylinders. The numerical results are confirmed by the experiment. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved.

引用

页码：1766 / 1770

页数：5

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