Toroidal metamaterial
Toroidal metamaterial
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DOI：
10.1088/1367-2630/9/9/324
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发表时间：
2007-09-14
影响因子：
3.3
通讯作者：
Zheludev, N.
中科院分区：
文献类型：
--
作者：
Marinov, K.;Boardman, A. D.;Zheludev, N.
结果表明，一种新型的超材料，三维阵列的环形天线，显示出显着的环形响应，可以很容易地测量。这与自然界中存在的材料形成鲜明对比，在自然界中，环形分量很弱，很难测量。最佳配置的存在，最大限度地提高与外部电磁场的相互作用，证明。此外，它被发现的一个特性的磁环响应是其强烈的依赖于宿主材料的背景介电常数，这表明可能的应用。由金属丝阵列和环形介质阵列组成的复合环形超材料中存在负折射和后向波。
It is shown that a new type of metamaterial, a 3D-array of toroidal solenoids, displays a significant toroidal response that can be readily measured. This is in sharp contrast to materials that exist in nature, where the toroidal component is weak and hardly measurable. The existence of an optimal configuration, maximizing the interaction with an external electromagnetic field, is demonstrated. In addition, it is found that a characteristic feature of the magnetic toroidal response is its strong dependence on the background dielectric permittivity of the host material, which suggests possible applications. Negative refraction and backward waves exist in a composite toroidal metamaterial, consisting of an array of wires and an array of toroidal solenoids.