Chettiar Uday K, Engheta Nader
Department of Electrical and Systems Engineering, University of Pennsylvania, 200 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Opt Express. 2012 Oct 8;20(21):22976-86. doi: 10.1364/OE.20.022976.
The concept of internal homogenization is introduced as a complementary approach to the conventional homogenization schemes, which could be termed as external homogenization. The theory for the internal homogenization of the permittivity of subwavelength coated spheres is presented. The effective permittivity derived from the internal homogenization of coreshells is discussed for plasmonic and dielectric constituent materials. The effective model provided by the homogenization is a useful design tool in constructing coated particles with desired resonant properties.
引入内部均匀化概念作为传统均匀化方案的一种补充方法，传统均匀化方案可称为外部均匀化。本文提出了亚波长涂层球体介电常数的内部均匀化理论。针对等离子体和电介质组成材料，讨论了由核壳结构内部均匀化得到的有效介电常数。均匀化提供的有效模型是构建具有所需共振特性的涂层颗粒的有用设计工具。
