A broadband acoustic omnidirectional absorber comprising positive-index materials

被引：75

作者：

Li, Rui-Qi ^{[1
]}

Zhu, Xue-Feng ^{[1
]}

Liang, Bin ^{[1
]}

Li, Yong ^{[1
]}

Zou, Xin-Ye ^{[1
]}

Cheng, Jian-Chun ^{[1
]}

机构：

[1] Nanjing Univ, Inst Acoust, Dept Phys, Key Lab Modern Acoust,MOE, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 19期

基金：

中国国家自然科学基金;

关键词：

PROPAGATION;

D O I：

10.1063/1.3659690

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We propose a broadband acoustic omnidirectional absorber (AOA) made of acoustic metamaterials having a positive index, which guides an incident acoustic wave into a central cavity spirally without backscattering. Numerical simulations show that the AOA has an absorption cross section remarkably larger than its cavity within a broad band, which is of potential practical significance to various applications such as sound absorption and noise control. A possible scheme for the practical realization of the AOA is also briefly discussed. VC 2011 American Institute of Physics. [doi: 10.1063/1.3659690]

引用

页数：3

共 14 条

[1] Metamaterial with simultaneously negative bulk modulus and mass density
Ding, Yiqun
Liu, Zhengyou
Qiu, Chunyin
Shi, Jing
[J]. PHYSICAL REVIEW LETTERS, 2007, 99 (09)
[2] Mimicking celestial mechanics in metamaterials
Genov, Dentcho A.
Zhang, Shuang
Zhang, Xiang
[J]. NATURE PHYSICS, 2009, 5 (09) : 687 - 692
[3] Hawking Radiation from an Acoustic Black Hole on an Ion Ring
Horstmann, B.
Reznik, B.
Fagnocchi, S.
Cirac, J. I.
[J]. PHYSICAL REVIEW LETTERS, 2010, 104 (25)
[4] Cylinder light concentrator and absorber: theoretical description
Kildishev, Alexander V.
Prokopeva, Ludmila J.
Narimanov, Evgenii E.
[J]. OPTICS EXPRESS, 2010, 18 (16): : 16646 - 16662
[5] Li J, 2004, PHYS REV E, V70, DOI 10.1103/PhysRevE.70.055602
[6] Effective medium method for sound propagation in a soft medium containing air bubbles
Liang, Bin
Zou, Xinye
Cheng, Jianchun
[J]. JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2008, 124 (03) : 1419 - 1429
[7] Graded index photonic hole: Analytical and rigorous full wave solution
Liu, Shiyang
Li, Li
Lin, Zhifang
Chen, H. Y.
Zi, Jian
Chan, C. T.
[J]. PHYSICAL REVIEW B, 2010, 82 (05):
[8] A simple design of an artificial electromagnetic black hole
Lu, Wanli
Jin, JunFeng
Lin, Zhifang
Chen, Huanyang
[J]. JOURNAL OF APPLIED PHYSICS, 2010, 108 (06)
[9] Optical black hole: Broadband omnidirectional light absorber
Narimanov, Evgenii E.
Kildishev, Alexander V.
[J]. APPLIED PHYSICS LETTERS, 2009, 95 (04)
[10] Metamaterial frequency-selective superabsorber
Ng, Jack
Chen, Huanyang
Chan, C. T.
[J]. OPTICS LETTERS, 2009, 34 (05) : 644 - 646

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