控制电磁隐身衣的损耗以实现完美的波吸收
Manipulating the Loss in Electromagnetic Cloaks for Perfect Wave Absorption
摘要：
我们研究了几种方法来操纵电磁斗篷的损失，基于变换电磁学。研究发现，通过利用超材料的固有电磁损耗，可以实现基于几种流行的电磁隐身衣设计的完美的波吸收。一个实际的实施方案的吸收，由十个离散层的超材料，提出。新器件在中等宽带范围内表现出超吸收性，适用于微波和光学应用。它证实，该设备是功能与亚波长的厚度，因此，与传统的吸收器相比，是有利的。
英文摘要：
We examine several ways to manipulate the loss in electromagnetic cloaks, based on transformation electromagnetics. It is found that, by utilizing inherent electric and magnetic losses of metamaterials, perfect wave absorption can be achieved based on several popular designs of electromagnetic cloaks. A practical implementation of the absorber, consisting of ten discrete layers of metamaterials, is proposed. The new devices demonstrate super-absorptivity over a moderate wideband range, suitable for both microwave and optical applications. It is corroborated that the device is functional with a subwavelength thickness and, hence, advantageous compared to the conventional absorbers.
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