Electrophoretic motion of a soft spherical particle in a nanopore

Title
Electrophoretic motion of a soft spherical particle in a nanopore
Author(s)
스즈첸Mingkan Zhang[Mingkan Zhang]Ye Ai[Ye Ai]김동수[김동수]정준호[정준호]주상우
Keywords
POISSON-BOLTZMANN EQUATION; MEMBRANE-COATED SPHERE; SURFACE-CHARGE DENSITY; CYLINDRICAL PORE; ELECTROOSMOTIC FLOW; ELECTROKINETIC PROPERTIES; COLLOIDAL PARTICLES; FINITE CYLINDER; DOUBLE-LAYERS; IONIC-CURRENT
Issue Date
201111
Publisher
ELSEVIER SCIENCE BV
Citation
COLLOIDS AND SURFACES B-BIOINTERFACES, v.88, no.1, pp.165 - 174
Abstract
Many biocolloids, biological cells and micro-organisms are soft particles, consisted with a rigid inner core covered by an ion-permeable porous membrane layer. The electrophoretic motion of a soft spherical nanoparticle in a nanopore filled with an electrolyte solution has been investigated using a continuum mathematical model. The model includes the Poisson-Nernst-Planck (PNP) equations for the ionic mass transport and the modified Stokes and Brinkman equations for the hydrodynamic fields outside and inside the porous membrane layer, respectively. The effects of the "softness" of the nanoparticle on its electrophoretic velocity along the axis of a nanopore are examined with changes in the ratio of the radius of the rigid core to the double layer thickness, the ratio of the thickness of the porous membrane layer to the radius of the rigid core, the friction coefficient of the porous membrane layer, the fixed charge inside the porous membrane layer of the particle and the ratio of the radius of the nanopore to that of the rigid core. The presence of the soft membrane layer significantly affects the particle electrophoretic mobility. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/24286http://dx.doi.org/10.1016/j.colsurfb.2011.06.027
ISSN
0927-7765
Appears in Collections:
공과대학 > 기계공학부 > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE