Boundary Effects on Diffusiophoresis and Electrophoresis: Motion of a Colloidal Sphere Normal to a Plane Wall

Journal of Colloid and Interface Science
H J Keh, J S Jan

Abstract

A combined analytical-numerical study of the diffusiophoresis and electrophoresis of a rigid sphere in a uniform applied field perpendicular to a plane wall is presented. The range of the interaction between the solute species and the solid surfaces is assumed to be small relative to the particle's radius and to the spacing between the particle and the wall, but the polarization of the diffuse species in the thin particle-solute interaction layer is allowed. A slip velocity of fluid and normal fluxes of solute species at the outer edge of the thin diffuse layer are used as the boundary conditions for the fluid domain outside the diffuse layer. Through the use of a collocation method along with these boundary conditions, a set of conservative equations governing the system is solved in the quasisteady state situation and the effects of a plane wall on diffusiophoresis and electrophoresis are calculated for various cases. For the cases of diffusiophoresis in a nonelectrolyte gradient and of electrophoresis, the particle velocity decreases monotonically with the decrease of the distance of the particle center from the wall. For the case of diffusiophoresis in an electrolyte gradient, however, the boundary effect is a complicated f...Continue Reading

Citations

Feb 1, 2011·Journal of Colloid and Interface Science·Sang W Joo, Shizhi Qian
Nov 26, 2009·Journal of Colloid and Interface Science·Jyh-Ping HsuShiojenn Tseng
Dec 6, 2008·Journal of Colloid and Interface Science·James LouEric Lee
Apr 19, 2008·Journal of Colloid and Interface Science·Yu C Chang, Huan J Keh
Aug 3, 2007·Journal of Colloid and Interface Science·Tzu H Hsieh, Huan J Keh
Jul 22, 2006·Electrophoresis·Jyh-Ping HsuMing-Hong Ku
Feb 23, 2011·Electrophoresis·Mustafa Sabri Kilic, Martin Z Bazant
Oct 12, 2010·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Sang W JooShizhi Qian
Feb 22, 2005·Journal of Colloid and Interface Science·Jyh-Ping Hsu, Ming-Hong Ku
Mar 11, 2006·Journal of Colloid and Interface Science·James LouEric Lee
Apr 20, 2017·Electrophoresis·Han C Chiu, Huan J Keh
May 18, 2005·Journal of Colloid and Interface Science·Po Y Chen, Huan J Keh
Jan 15, 2016·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Jianyong MoMark G Raizen
Apr 30, 2010·The Journal of Physical Chemistry. B·Sang Yoon LeeShizhi Qian
Mar 4, 2010·The Journal of Physical Chemistry. B·Sinan E YalcinShizhi Qian
Jun 16, 2007·Langmuir : the ACS Journal of Surfaces and Colloids·Huan J Keh, Tzu H Hsieh
Feb 27, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Jyh-Ping HsuKuan-Liang Liu
Jun 4, 2010·The Journal of Physical Chemistry. B·Jyh-Ping HsuWei-Lun Hsu

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