Low-loss metamaterial electromagnetically induced transparency based on electric toroidal dipolar response
Low-loss metamaterial electromagnetically induced transparency based on electric toroidal dipolar response
复制标题
基于电环形偶极响应的低损耗超材料电磁感应透明
DOI：
10.1063/1.4913888
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发表时间：
2015-02-23
影响因子：
4
通讯作者：
Zhang, Hai-feng
中科院分区：
文献类型：
--
作者：
Li, Hai-ming;Liu, Shao-bin;Zhang, Hai-feng
本文提出了一种基于电环向偶极子响应的低损耗高透射率电磁感应透明模拟方法，并进行了数值和实验验证。它是通过激励低损耗电环向偶极响应获得的，该响应将磁场限制在具有环形几何形状的介质衬底内。超材料电磁感应透明(EIT)结构由切割线和非对称开环谐振器组成。传输能级高达0.88，辐射损耗得到很大程度的抑制，这可以从表面电流分布、磁场分布以及有效磁导率和介电常数的虚部得到证明。它为制作低损耗、高透过率的超材料EIT提供了一条有效的途径。
In this paper, a low-loss and high transmission analogy of electromagnetically induced transparency based on electric toroidal dipolar response is numerically and experimentally demonstrated. It is obtained by the excitation of the low-loss electric toroidal dipolar response, which confines the magnetic field inside a dielectric substrate with toroidal geometry. The metamaterial electromagnetically induced transparency (EIT) structure is composed of the cut wire and asymmetric split-ring resonators. The transmission level is as high as 0.88, and the radiation loss is greatly suppressed, which can be proved by the surface currents distributions, the magnetic field distributions, and the imaginary parts of the effective permeability and permittivity. It offers an effective way to produce low-loss and high transmission metamaterial EIT.