Effective ac response of graded colloidal suspensions

doi:10.1063/1.2177378

IOCAS-IR > 海洋环流与波动重点实验室

	Effective ac response of graded colloidal suspensions
	Wei, EB ; Dong, L ; Yu, KW
	2006-03-01
发表期刊	JOURNAL OF APPLIED PHYSICS
卷号	99 期号:5
文章类型	Article
摘要	The alternating current (ac) response has been investigated theoretically in colloidal suspensions consisting of suspended radially inhomogeneous graded particles having complex permittivity profiles under an external ac electric field. The gradation in the colloidal particles is modeled by physically motivated graded profiles as the dielectric function may only vary slightly along the radius, while the conductivity profile may vary rapidly along the radius. More precisely, the dielectric function is assumed to be a constant, while the conductivity has a power-law dependence on the radius variable r, namely, epsilon(i)(r)=A+cr(k)/(i omega). In previous attempts, this model was solved numerically via the differential effective dipole approximation. In this work, we will demonstrate the existence of exact analytical solutions of the local potentials in the graded particles in terms of the hypergeometric functions, and hence the effective ac response is calculated in the dilute limit. Our exact results will be applied to graded biological cell suspensions. Extensions to nonlinear ac response will be discussed.
DOI	10.1063/1.2177378
收录类别	SCI
语种	英语
WOS记录号	WOS:000236002900053
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/32544
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Helsinki Univ Technol, Biophys & Stat Mech Grp, Lab Computat Engn, FIN-02015 Helsinki, Finland 3.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China 4.Chinese Univ Hong Kong, Inst Theoret Phys, Shatin, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wei, EB,Dong, L,Yu, KW. Effective ac response of graded colloidal suspensions[J]. JOURNAL OF APPLIED PHYSICS,2006,99(5).
APA	Wei, EB,Dong, L,&Yu, KW.(2006).Effective ac response of graded colloidal suspensions.JOURNAL OF APPLIED PHYSICS,99(5).
MLA	Wei, EB,et al."Effective ac response of graded colloidal suspensions".JOURNAL OF APPLIED PHYSICS 99.5(2006).

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