Cloaking a sensor for three-dimensional Maxwell's equations: transformation optics approach.
Cloaking a sensor for three-dimensional Maxwell's equations: transformation optics approach.
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DOI：
10.1364/oe.19.020518
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发表时间：
2011-10
期刊：
影响因子：
3.8
通讯作者：
Xudong Chen;G. Uhlmann
中科院分区：
文献类型：
--
作者：
Xudong Chen;G. Uhlmann
理想的变换光学隐形是伴随着屏蔽的：外部观察不能提供任何隐形物体存在的迹象，也不能在隐形区域内检测到任何关于外部场的信息。本文提出了一种在传感器模式下对三维物体进行电磁波隐身的方法，即隐身伴随着退化的屏蔽。提出的转换解决了三维电磁辐射中最低多极子是偶极子而不是单极子所造成的困难。传感器表面阻抗的损失是决定理想隐身、传感器隐身和谐振隐身模式的重要因素。
The ideal transformation optics cloaking is accompanied by shielding: external observations do not provide any indication of the presence of a cloaked object, nor is any information about the fields outside detectable inside the cloaked region. In this paper, a transformation is proposed to cloak three-dimensional objects for electromagnetic waves in sensor mode, i.e., cloaking accompanied by degraded shielding. The proposed transformation tackles the difficulty caused by the fact that the lowest multipole in three-dimensional electromagnetic radiation is dipole rather than monopole. The loss of the surface impedance of the sensor plays an important role in determining the cloaking modes: ideal cloaking, sensor cloaking and resonance.