Electromagnetic concentrators with reduced material parameters based on coordinate transformation.
Electromagnetic concentrators with reduced material parameters based on coordinate transformation.
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DOI：
10.1364/oe.16.011431
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发表时间：
2008-07
期刊：
影响因子：
3.8
通讯作者：
Wei Wang;Lan-Lan Lin-Lan;Junxian Ma;Changtao Wang;J. Cui;C. Du;Xian-shu Luo
中科院分区：
文献类型：
--
作者：
Wei Wang;Lan-Lan Lin-Lan;Junxian Ma;Changtao Wang;J. Cui;C. Du;Xian-shu Luo
全向电磁场聚光器最近由Marco Rahm等人报道。Nanostruct。: Fundam。基于与Jacobi变换矩阵相关的形式不变坐标变换。采用横波照明，减少了聚光器复杂的材料参数，便于今后的实际应用。提出了具有不同介电常数和磁导率张量的聚光器。对这些聚光器的电磁聚光性能和内外边界的散射特性进行了理论和数值分析。最后，我们得到了同时具有内外界面完美匹配的聚光器的一组材料张量。
Omni-directional electromagnetic field concentrators have been recently reported by Marco Rahm et al. [Photon. Nanostruct.: Fundam. Appl. 6, 87 (2008)] based on form-invariant coordinate transformations related to its Jacobi transformation matrix. Using transverse-electric wave illumination, we reduced the complex material parameters of the concentrator for future practical implementation. Concentrators with different set of permittivity and permeability tensors are proposed. The electromagnetic concentrating performance and the scattering properties at the inner and outer boundary of these concentrators are theoretically and numerically analyzed. Finally we obtain a set of material tensors for a concentrator that simultaneously has perfect matched interior and exterior interfaces.