Broadband and low loss high refractive index metamaterials in the microwave regime
Broadband and low loss high refractive index metamaterials in the microwave regime
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DOI：
10.1063/1.4794088
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发表时间：
2013-03
影响因子：
4
通讯作者：
T. Campbell;A. Hibbins;J. Sambles;I. Hooper
中科院分区：
文献类型：
--
作者：
T. Campbell;A. Hibbins;J. Sambles;I. Hooper
一种宽带、低损耗、各向同性、高折射率的超材料，包括交联方形金属板的密集立方体元件的阵列，在微波区被证明。立方体元件的结构化降低了由固体金属立方体阵列所表现出的抗磁响应，同时保持了由相邻金属元件之间的电容耦合引起的强烈增强的介电常数。折射率的相应增加可以通过面的适当结构化和/或立方体的间距来定制。
A broadband, low-loss, isotropic, high refractive index metamaterial comprising an array of close-packed cubic elements of cross-linked square metal plates is demonstrated in the microwave regime. The structuring of the cubic elements reduces the diamagnetic response exhibited by arrays of solid metal cubes, whilst maintaining the strongly enhanced permittivity arising from capacitative coupling between adjacent metal elements. The corresponding increase in refractive index can be tailored through appropriate structuring of the faces and/or spacing of the cubes.