Multi-band and broadband acoustic metamaterial with resonant structures

被引：78

作者：

Ding, Chang-Lin ^{[1
]}

Zhao, Xiao-Peng ^{[1
]}

机构：

[1] NW Polytech Univ, Dept Appl Phys, Smart Mat Lab, Xian 710129, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2011年 / 44卷 / 21期

基金：

中国国家自然科学基金;

关键词：

LEFT-HANDED METAMATERIALS; NEGATIVE-INDEX;

D O I：

10.1088/0022-3727/44/21/215402

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We design an acoustic metamaterial (AM) with multi-band of negative modulus composed of different sized split hollow spheres (SHSs). From acoustic transmitted experiment, the AM exhibits simultaneously negative modulus at frequencies 914, 1298 and 1514 Hz. Based on the multi-band designed concept, broadband AM is fabricated by arraying gradually sized SHS. The transmission results indicate that this medium can achieve negative modulus at the frequency range from 900 to 1500 Hz. This kind of broadband AM is very convenient to couple with other structures to gain the double-negative AM.

引用

页数：8

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