Dynamic effects on nonlinear alternating current responses in electrorheological fluids.
Dynamic effects on nonlinear alternating current responses in electrorheological fluids.
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DOI：
10.1103/physreve.73.031408
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发表时间：
2006-03
期刊：
影响因子：
--
通讯作者：
W. Tian;Jiping Huang;K. Yu
中科院分区：
文献类型：
--
作者：
W. Tian;Jiping Huang;K. Yu
By using a perturbation approach, we investigate dynamic effects on nonlinear alternating current (ac) responses in electrorheological (ER) fluids under an ac or direct current electric field. We show that the dynamic effect due to a shear flow, which exerts a torque on ER particles and thus leads to the rotation of the particles about their centers, plays a significant role in the responses. Our results can be well interpreted in the dielectric dispersion spectral representation, and they offer a convenient method to determine the relaxation time and rotation velocity of ER particles by measuring the nonlinear ac responses.
