Comparative Study on the Effective Dielectric Constant of the Graded Composites
Comparative Study on the Effective Dielectric Constant of the Graded Composites
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梯度复合材料有效介电常数的比较研究
DOI:
10.4028/www.scientific.net/amr.677.192
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发表时间:
2013-03
期刊:
影响因子:
--
通讯作者:
Erjun Liang
中科院分区:
文献类型:
--
作者:
Chunzhen Fan;Junqiao Wang;Erjun Liang
The effective dielectric constant of the graded composites was calculated with three different methods, namely, the nonlinear differential effective dipole approximation method (NDEDA), the Maxwell-Garnette method (MGT) and the sum rule method (Sum). In each layer of the graded composites, the distribution of the dielectric constant follows a Drude form. Our numerical results show that when the number of layers N inside the graded composites increases, a gradual transition from sharp peaks to an emerging broad continuous band is clearly obtained. Moreover, the results obtained by the MGT and sum rule methods achieve a good agreement with that by the NDEDA method when N is approaching infinity.
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