Modelling heterogeneous dielectric mixtures in the terahertz regime: a quasi-static effective medium theory
Modelling heterogeneous dielectric mixtures in the terahertz regime: a quasi-static effective medium theory
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DOI：
10.1088/0022-3727/42/6/065415
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发表时间：
2009-03-21
影响因子：
3.4
通讯作者：
Koch, Martin
中科院分区：
文献类型：
--
作者：
Scheller, Maik;Wietzke, Steffen;Koch, Martin
本文提出了一种适用于非均匀介质混合物的准静态有效介质理论。该模型仍然适用于所有的混合物浓度，也可以考虑颗粒的形状分布，从而克服了以前的方法的限制。实验验证了高精度太赫兹时域光谱测量三种不同的聚合物系统的理论。与常用的理论进行了比较。
We present a quasi-static effective medium theory for heterogeneous dielectric mixtures consisting of particles embedded in a host matrix. The model remains valid for all mixture concentrations and can also consider particle shape distributions, thus overcoming the restrictions of previous approaches. The theory is experimentally validated by highly accurate terahertz time domain spectroscopy measurements on three different polymeric compound systems. A comparison with commonly applied theories is given.