Optimizing the band gap of effective mass negativity in acoustic metamaterials

被引：105

作者：

Tan, K. T. ^{[1
]}

Huang, H. H. ^{[2
]}

Sun, C. T. ^{[1
]}

机构：

[1] Purdue Univ, Sch Aeronaut & Astronaut, W Lafayette, IN 47907 USA

[2] Natl Taiwan Univ, Dept Engn Sci & Ocean Engn, Taipei 10617, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 24期

关键词：

MODULUS; INDEX;

D O I：

10.1063/1.4770370

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A dual-resonator microstructure design is proposed for acoustic metamaterials to achieve broadband effective mass negativity. We demonstrate the advantage of acoustic wave attenuation over a wider frequency spectrum as compared to the narrow band gap of a single-resonator design. We explicitly confirm the effect of negative effective mass density by analysis of wave propagation using finite element simulations. Examples of practical application like vibration isolation and blast wave mitigation are presented and discussed. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4770370]

引用

页数：4

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