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Origin of the reduced attracting force between a rotating dielectric particle and a stationary one | | W J Tian
; M K Liu
; J P Huang
; | | Date: |
31 Jan 2007 | | Journal: | Phys Rev E, 75 (2 Pt 1), 021401 | | Abstract: | Recently Tao and Lan [Phys. Rev. E. 72, 041508 (2005)] experimentally reported that the rotation of a dielectric particle can reduce significantly the attracting interparticle force between the rotating dielectric particle and a stationary one in argon gas. We develop the Gu-Yu-Hui theory of relaxation [J. Chem. Phys. 116, 24 (2002)] to account for the Tao-Lan observations. Excellent agreement between the theoretical results and the Tao-Lan experimental data shows that the reduction in the attracting interparticle force is due to the effect of charge relaxation. We also show that the relaxation time of touching rotating particles can be accurately determined with the aid of the developed theory, for which, however, the well-known Maxwell-Wagner relaxation time is no longer valid. | | Source: | PubMed, pmid17358336 | | Services: | Forum | Review | Favorites | |
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