Acoustic cloaking in three dimensions using acoustic metamaterials
Acoustic cloaking in three dimensions using acoustic metamaterials
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DOI：
10.1063/1.2803315
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发表时间：
2007-10-29
影响因子：
4
通讯作者：
Chan, C. T.
中科院分区：
文献类型：
--
作者：
Chen, Huanyang;Chan, C. T.
Cummer和Schurig [New J. Phys. 9,45(2007)]提出了一种实现二维（2D）声学隐身的方案，通过将声学方程映射到二维几何中的一个极化的麦克斯韦方程。我们发现声学方程可以在三维空间中映射到直流电导率方程，从而可以利用坐标变换方案设计三维声隐身。利用球-贝塞尔函数级数展开法求解散射问题，证实了完美的隐身效果。(C) 2007年美国物理研究所。
A scheme to achieve two dimensional (2D) acoustic cloaking is proposed by Cummer and Schurig [New J. Phys. 9, 45 (2007)] by mapping the acoustic equations to Maxwell's equations of one polarization in the 2D geometry. We find that the acoustic equation can be mapped to the direct current conductivity equation in three dimensions, which then allows the design of three-dimensional acoustic cloaking using the coordinate transformation scheme. The perfect cloaking effect is confirmed by solving for the scattering problem using the spherical-Bessel function series expansion method. (C) 2007 American Institute of Physics.