Design of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations
Design of electromagnetic cloaks and concentrators using form-invariant coordinate transformations of Maxwell's equations
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DOI：
10.1016/j.photonics.2007.07.013
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发表时间：
2008-04-01
影响因子：
2.7
通讯作者：
Pendry, John B.
中科院分区：
文献类型：
--
作者：
Rahm, Marco;Schurig, David;Pendry, John B.
应用麦克斯韦方程的形式不变、空间坐标变换的技术可以促进具有独特电磁或光学功能的结构的设计。在这里，我们说明了变换光学方法在方形电磁斗篷和全方位电磁场集中器的设计中的应用。给出了变换方程，并通过二维有限元模拟对器件的功能进行了数值验证。这两种器件表明，变换光学方法导致了具有良好定向和明显电磁行为的复杂、各向异性和非均匀材料的规范。(C)2007 Elsevier B.V.保留所有权利。
The technique of applying form-invariant, spatial coordinate transformations of Maxwell's equations can facilitate the design of structures with unique electromagnetic or optical functionality. Here, we illustrate the transformation-optical approach in the designs of a square electromagnetic cloak and an omni-directional electromagnetic field concentrator. The transformation equations are described and the functionality of the devices is numerically confirmed by two-dimensional finite element simulations. The two devices presented demonstrate that the transformation optic approach leads to the specification of complex, anisotropic and inhomogeneous materials with well directed and distinct electromagnetic behavior. (c) 2007 Elsevier B.V. All rights reserved.