一维AB结构的电磁特异材料的有效媒质参量确定

Determiner of the Effective Medium Parameters of the Metamaterial in One-Dimensional AB Structure

基于推广的相干势近似,将特异材料放入背景材料中,利用格林函数的方法计算一维AB结构的电磁特异材料体系的自能,态密度.态密度函数是背景材料的介电常数εref和磁导率μref的函数.通过不断变换背景材料的介电常数ε和磁导率μ,而使得态密度最大化,从而确定体系的有效媒质参量.

Based on the generalized coherent potential approximation,self-energy and density of states of metamaterial in one-dimensional AB Structure is determined using the Green Function when metamaterial is put into the reference medium.Density of states function is the function of εref and μref of the reference medium.By constantly changing εref and μref of the reference medium,density of states is maximized and then the effective parameters are determined.