Three dimensional multilayered acoustic cloak with homogeneous isotropic materials

被引：50
作者：
Cheng, Y. [1 ]
Liu, X. J. [1 ]
机构：
[1] Nanjing Univ, Key Lab Modern Acoust MOE, Nanjing 210093, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 94卷 / 01期
基金：
中国国家自然科学基金;
关键词：
43; 20; +g; 35; +d; 42; 25; Fx;
D O I：
10.1007/s00339-008-4882-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A three-dimensional (3D) spherical acoustic cloak is designed using an acoustic layered system, which can hide an object from the detection of acoustic wave in arbitrary direction. The cloak is constructed from multilayered concentric spherical shells filled with homogeneous isotropic materials. Based on spherical wave expansion method, we confirm that significant low-reflection, acoustic-shadow-reducing, and wavefront-bending effects in 3D space can be achieved by the proposed cloak. The angle distribution of the scattered wave is further evaluated by the far-field scattering pattern. In addition, the cloak is demonstrated to work efficiently in a wide bandwidth in which the cloaking efficiency decreases with increasing frequency. This study may be helpful to design high-performance 3D acoustic cloaks for broadband acoustic waves in all incidence directions.
引用
收藏
页码：25 / 30
页数：6
相关论文
共 17 条
[1]   Analysis of Cummer-Schurig acoustic cloaking [J].
Cai, Liang-Wu ;
Sanchez-Dehesa, Jose .
NEW JOURNAL OF PHYSICS, 2007, 9
[2]   Acoustic cloaking in three dimensions using acoustic metamaterials [J].
Chen, Huanyang ;
Chan, C. T. .
APPLIED PHYSICS LETTERS, 2007, 91 (18)
[3]   One-dimensional structured ultrasonic metamaterials with simultaneously negative dynamic density and modulus [J].
Cheng, Y. ;
Xu, J. Y. ;
Liu, X. J. .
PHYSICAL REVIEW B, 2008, 77 (04)
[4]   A multilayer structured acoustic cloak with homogeneous isotropic materials [J].
Cheng, Ying ;
Yang, Fan ;
Xu, Jian Yi ;
Liu, Xiao Jun .
APPLIED PHYSICS LETTERS, 2008, 92 (15)
[5]   Scattering theory derivation of a 3D acoustic cloaking shell [J].
Cummer, Steven A. ;
Popa, Bogdan-Ioan ;
Schurig, David ;
Smith, David R. ;
Pendry, John ;
Rahm, Marco ;
Starr, Anthony .
PHYSICAL REVIEW LETTERS, 2008, 100 (02)
[6]   One path to acoustic cloaking [J].
Cummer, Steven A. ;
Schurig, David .
NEW JOURNAL OF PHYSICS, 2007, 9
[7]  
GREENLEAF A, 2008, ARXIV08013279
[8]   Electromagnetic cloaking by layered structure of homogeneous isotropic materials [J].
Huang, Ying ;
Feng, Yijun ;
Jiang, Tian .
OPTICS EXPRESS, 2007, 15 (18) :11133-11141
[9]   Locally resonant sonic materials [J].
Liu, ZY ;
Zhang, XX ;
Mao, YW ;
Zhu, YY ;
Yang, ZY ;
Chan, CT ;
Sheng, P .
SCIENCE, 2000, 289 (5485) :1734-1736
[10]   New metamaterials with macroscopic behavior outside that of continuum elastodynamics [J].
Milton, Graeme W. .
NEW JOURNAL OF PHYSICS, 2007, 9
12