Extreme enhancement and reduction of the dielectric response of polymer nanoparticulate composites via interphasial charges
Extreme enhancement and reduction of the dielectric response of polymer nanoparticulate composites via interphasial charges
复制标题
通过相间电荷极大增强和降低聚合物纳米颗粒复合材料的介电响应
DOI：
10.1063/1.4884368
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发表时间：
2014
影响因子：
4
通讯作者：
Z. Ounaies
中科院分区：
文献类型：
--
作者：
O. Lopez;T. Goudarzi;A. Meddeb;Z. Ounaies
构建了颗粒复合材料均质（即宏观）介电响应的解析解，这些颗粒复合材料由随机分布的颗粒通过有限尺寸的包含空间电荷的界面结合到基体材料上。通过考虑相间电荷，该解决方案能够描述和解释新兴聚合物纳米颗粒复合材料典型表现出的介电响应的极端增强和降低。更一般地说，该解决方案揭示了明智地操纵相间电荷为设计具有特殊介电性能的材料提供了一条有前途的道路。
An analytical solution is constructed for the homogenized (i.e., macroscopic) dielectric response of particulate composites comprising a random distribution of particles bonded to a matrix material through interphases of finite size that contain space charges. By accounting for interphasial charges, the solution is able to describe and explain both the extreme enhancement and the reduction of the dielectric response typically exhibited by emerging polymer nanoparticulate composites. More generally, the solution reveals that judicious manipulation of interphasial charges provides a promising path forward for the design of materials with exceptional dielectric properties.