On steady two-fluid electroosmotic flow with full interfacial electrostatics

Title
On steady two-fluid electroosmotic flow with full interfacial electrostatics
Author(s)
주상우최우석[최우석]아슈샬마스즈첸임근배[임근배]
Keywords
IMMISCIBLE ELECTROLYTE-SOLUTIONS; ELECTRIC-FIELD; ELECTROHYDRODYNAMICS; MICROCHANNEL; INSTABILITY; PLATES; FLUID; FILMS
Issue Date
201105
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
JOURNAL OF COLLOID AND INTERFACE SCIENCE, v.357, no.2, pp.521 - 526
Abstract
A two-fluid electroosmotic flow in a microchannel is studied by considering full hydrodynamic and electrostatic interactions on the interface. Jumps in electrical potential and in charge density across the interface, in particular, are found to create counterintuitive flow behavior through the electrostatic interaction of the interface with the external field imposed. The interfacial electrostatic effects are shown to induce flow reversal within physically reasonable parametric ranges. It is also shown that the electrostatic properties of the interface must be carefully considered in electroosmotic pumping lest the nonconducting fluid should stay stationary or flow in an unintended direction. A formula for quantitative control of electroosmotic pumping is provided. (C) 2011 Elsevier Inc. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/25259http://dx.doi.org/10.1016/j.jcis.2011.01.107
ISSN
0021-9797
Appears in Collections:
공과대학 > 기계공학부 > Articles
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