Electro-Optic Effects in Colloidal Crystals of Spherical Silica Particles
Electro-Optic Effects in Colloidal Crystals of Spherical Silica Particles
复制标题
球形二氧化硅颗粒胶体晶体中的电光效应
DOI：
10.1006/jcis.1995.0031
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发表时间：
1995
影响因子：
9.9
通讯作者：
T. Okubo
中科院分区：
文献类型：
--
作者：
M. Stoimenova;T. Okubo
用电光散射法研究了各向同性球形二氧化硅胶体晶体的电光行为。在低频率（赫兹范围）观察到的电光响应是一致的电荷传输和对流引起的颗粒浓度波动。检测谐振频率，在该谐振频率处电光响应的衰减是粘弹性的。电场强度的增加引入了类似于在液晶中观察到的电流体动力学效应。
The electro-optic behavior of isotropic colloidal crystals of spherical silica particles is investigated by the electric light-scattering method. The electro-optic responses observed at low frequencies (hertz range) are consistent with particle concentration fluctuations induced by charge transport and convection. A resonance frequency is detected, at which the decay of the electro-optic response is viscoelastic. The increase of field intensity introduces electrohydrodynamic effects similar to those observed in the liquid crystals.