Acoustic transmission enhancement through a stiff plate drilled with subwavelength side openings

被引：8
作者：
Peng, Pai [1 ]
Qiu, Chunyin
Hao, Rui
Lu, Jiuyang
Liu, Zhengyou
机构：
[1] Wuhan Univ, Key Lab Artificial Micro & Nano Struct, Minist Educ, Wuhan 430072, Peoples R China
来源：
EPL | 2011年 / 93卷 / 03期
基金：
中国国家自然科学基金;
关键词：
HOLE ARRAYS; LIGHT; APERTURES;
D O I：
10.1209/0295-5075/93/34004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study the acoustic transmission through a water-immersed brass plate drilled with a one-dimensional periodical array of rectangular side openings. This new geometry can reveal well the unique properties in acoustic systems, which are rooted in the complex coupling between the longitudinal and transverse waves. Besides the transmission peaks related with regular cavity modes, we observe two additional types of subwavelength peaks. One stems from the resonant excitation of the coupled nonleaky Lamb modes, and the other corresponds to the excitation of the standing plate modes. In particular, the latter is robust in the subwavelength region and has attracted no attention previously. Copyright (C) EPLA, 2011
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页数：4
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