Cloak for multilayered and gradually changing media

Cloak for multilayered and gradually changing media
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多层且逐渐变化的媒体的斗篷

DOI:
10.1103/physrevb.77.035116
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发表时间:
2008-01
期刊:
影响因子:
3.7
通讯作者:
Kong, Jin Au
Kong, Jin Au
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhang, Jingjing;Chen, Hongsheng;Wu, Bae-Ian;Huangfu, Jiangtao;Luo, Yu;Kong, Jin Au

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坐标变换法曾被用于设计一种能屏蔽均匀介质内部区域的隐身衣。本文考虑了背景不再是均匀介质的情况,根据多层渐变背景确定了隐身衣的相关本构参数。本文提出了在多层渐变介质中工作的圆柱形隐身结构的参数,这些参数的确定方法也适用于任意各向同性背景下隐身结构的设计。给出了基于坐标变换的理论分析,并进行了数值模拟,以说明这些性质。仿真结果表明,在这种非均匀背景介质中,采用所提出的参数进行隐身效果良好。潜在的应用进行了讨论。
Coordinate transformation approach has previously been used for designing a cloak which can shield an interior region in a homogeneous medium. In this paper, we consider the case where the background is no longer a homogeneous medium and determine the relative constitutive parameters of the cloak according to the multilayered and gradually changing background. We propose the parameters of cylindrical cloak structures working in multilayered and gradually changing media and the scheme of specifying these parameters could also be applied to the design of a cloak in an arbitrary isotropic background. The theoretical analysis based on coordinate transformation is given and numerical simulations are performed to illustrate these properties. The simulation results show that the cloaking with the proposed parameters performs well in these inhomogeneous background medium. Potential applications are also discussed.
DOI: --
发表时间: 2007
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