A Phase-Conjugate-Mirror Inspired Approach for Building Cloaking Structures with Left-handed Materials.
A Phase-Conjugate-Mirror Inspired Approach for Building Cloaking Structures with Left-handed Materials.
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DOI：
10.1088/1367-2630/11/3/033010
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发表时间：
2009
影响因子：
3.3
通讯作者：
Yang C
中科院分区：
文献类型：
--
作者：
Zheng G;Heng X;Yang C
位相共轭镜(PCM)具有消除无损散射体后向散射波的显著性能。位相共轭反射镜与匹配的右手材料(RHM)和左手材料(LHM)界面的相似性促使我们探索利用RHM-LHM结构来实现PCM的抗散射性能的潜力。在本文中，我们提出了两种这样的结构。第一种是RHM-LHM隐身结构，在RHM中嵌入任意形状的无损散射体，在匹配的LHM中嵌入其左手副本。结果表明，这种结构对入射电磁场是透明的。作为这种结构的特例，我们提出了一种电磁隧道，它允许电磁波在空间上传输到空间的另一个位置，而不会出现明显的失真和反射。第二种是RHM-PEC(理想电导体)-LHM隐身结构，它由埋入RHM界面结的对称导电壳层和匹配的LHM层组成。这种结构对入射传播的电磁场呈现出异常小的散射截面，壳体的内部可以用来屏蔽小物体(大小与波长相当)免受询问。我们报告了为了验证我们的想法而进行的2D有限元模拟的结果，并讨论了所提出的结构的独特性质以及它们的局限性。
A phase conjugate mirror (PCM) has a remarkable property of cancellation the back-scattering wave of the lossless scatterers. The similarity of a phase conjugate mirror to the interface of a matched RHM (right-handed material) and a LHM (left-handed material) prompts us to explore the potentials of using the RHM-LHM structure to achieve the anti-scattering property of the PCM. In this paper, we present two such structures. The first one is a RHM-LHM cloaking structure with a lossless arbitrary-shape scatterer imbedded in the RHM and its left-handed duplicate imbedded in the matched LHM. It is shown that such a structure is transparent to the incident electromagnetic (EM) field. As a special case of this structure, we proposed an EM tunnel that allows EM waves to spatially transport to another location in space without significant distortion and reflection. The second one is an RHM-PEC (perfect electric conductor)-LHM cloaking structure, which is composed of a symmetric conducting shell embedded in the interface junction of an RHM and the matched LHM layer. Such a structure presents an anomalously small scattering cross-section to an incident propagating EM field, and the interior of the shell can be used to shield small objects (size comparable to the wavelength) from interrogation. We report the results of 2D finite-element-method (FEM) simulations that were performed to verify our idea, and discuss the unique properties of the proposed structures as well as their limitations.
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影响因子：
3.2
作者：
Maslovski, S;Tretyakov, S
通讯作者：
Tretyakov, S
影响因子：
2.4
作者：
Alù, A;Engheta, N
通讯作者：
Engheta, N
影响因子：
2.4
作者：
Cummer, Steven A.;Popa, Bogdan-Ioan;Pendry, John
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影响因子：
8.6
作者：
Ruan, Zhichao;Yan, Min;Qiu, Min
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Qiu, Min
影响因子：
8.6
作者：
Pendry, JB
通讯作者：
Pendry, JB