2001/09/12 by Jones T. K. Wan, K. W. Yu, G. Q. Gu
Engineering · Physics and Astronomy · #Innovative Energy Harvesting Technologies #Seismic Performance and Analysis #Vibration Control and Rheological Fluids #cond-mat.mtrl-sci #cond-mat.soft
paper · pdf · doi:10.1103/physreve.64.061501
published as Phys. Rev. E 64, 061501 (2001). · Accepted for publications by Phys. Rev. E
arxiv created 2001/09/12 · openalex publication_date 2001/11/13 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We have examined the effect of an oscillatory rotation of a polarized dielectric particle. The rotational motion leads to a redistribution of the polarization charge on the surface of the particle. We show that the time-averaged steady-state dipole moment is along the field direction, but its magnitude is reduced by a factor that depends on the angular velocity of rotation. As a result, the rotational motion of the particle reduces the electrorheological effect. We further assume that the relaxation of the polarized charge is arised from a finite conductivity of the particle or host medium. We calculate the relaxation time based on the Maxwell-Wagner theory, suitably generalized to include the rotational motion. Analytic expressions for the reduction factor and the relaxation time are given and their dependence on the angular velocity of rotation will be discussed.