Translational motion of a spherical particle near a planar liquid-fluid interface

被引：11

作者：

Gao, Yandong ^{[1
]}

Li, Dongqing ^{[1
]}

机构：

[1] Vanderbilt Univ, Dept Mech Engn, Nashville, TN 37235 USA

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 319卷 / 01期

关键词：

electrophoretic motion; boundary effects; colloidal particle; fluid-fluid interface;

D O I：

10.1016/j.jcis.2007.11.052

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The translational electrophoretic motion of a colloidal spherical particle parallel to a planar liquid-fluid interface is analyzed by using the reciprocal theorem developed by Yariv and Brenner [E. Yariv, H. Brenner, J. Fluid Mech. 484 (2003) 85]. Based on the thin electric double layers assumption, analytical solutions of the forces acting on the particle are obtained, and the influence of the liquid-fluid interface on the electrophoretic velocity of-the particle is studied. It is found that the speed of the particle's electrokinetic motion will increase as the separation distance between the particle and the interface decreases. This enhancement of electrophoretic mobility becomes more significant when the viscosity of the fluid phase becomes larger. (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：344 / 352

页数：9

共 21 条

[1] ANDERSON JL, 1988, ANNU REV FLUID MECH, V30, P139
[2] Electroviscous forces on a charged particle suspended in a flowing liquid
Cox, RG
[J]. JOURNAL OF FLUID MECHANICS, 1997, 338 : 1 - 34
[3] Dukhin, 1974, SURF COLLOID SCI, V7, P1
[4] Boundary effects on electrophoretic motion of spherical particles for thick double layers and low zeta potential
Ennis, J
Anderson, JL
[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1997, 185 (02) : 497 - 514
[5] Transient two-liquid electroosmotic flow with electric charges at the interface
Gao, YD
Wong, TN
Yang, C
Ooi, KT
[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2005, 266 (1-3) : 117 - 128
[6] Happel J., 1983, Low Reynolds number hydrodynamics: with special applications to particulate media, V1
[7] On a form of the solution of Laplace's equation suitable for problems relating to two spheres.
Jeffery, GB
[J]. PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-CONTAINING PAPERS OF A MATHEMATICAL AND PHYSICAL CHARACTER, 1912, 87 (593) : 109 - 120
[8] BOUNDARY EFFECTS ON ELECTROPHORETIC MOTION OF COLLOIDAL SPHERES
KEH, HJ
ANDERSON, JL
[J]. JOURNAL OF FLUID MECHANICS, 1985, 153 (APR) : 417 - 439
[9] ELECTROPHORESIS OF A COLLOIDAL SPHERE PARALLEL TO A DIELECTRIC PLANE
KEH, HJ
CHEN, SB
[J]. JOURNAL OF FLUID MECHANICS, 1988, 194 : 377 - 390
[10] Electroosmotic flow at a liquid-air interface
Lee, Jacky S. H.
Li, Dongqing
[J]. MICROFLUIDICS AND NANOFLUIDICS, 2006, 2 (04) : 361 - 365

← 1 2 3 →