The Role of Surface Conductance on Electrokinetic Flows in Microchannels

Title
The Role of Surface Conductance on Electrokinetic Flows in Microchannels
Authors
전명석
Keywords
Electrokinetics; Microchannel; Surface Conductance; Electric Double Layer
Issue Date
2009-11
Publisher
5th Australian-Korean Rheology Conference
Citation
VOL 5, 72-74
Abstract
The nature of viscous flows and the small dimension inherent in confined spaces imply that the influence of boundaries is quite significant [1]. Regarding it, there are two properties resulting from the electric double layer (EDL) and the fluid slip. Basically, the electrokinetic phenomena are present due to the EDL, which forms as a result of the distribution of electric charges near a dielectric charged surface. The streaming current results in the pressure-driven flow direction of electrolyte solution, and the streaming potential generates corresponding to this streaming current. This flow-induced streaming potential acts to drive the counter-ions in the mobile part of the EDL to move in the direction opposite to the streaming current. This opposite-directional flow of ions will generate the conduction current in the Stern layer of the EDL.
URI
http://pubs.kist.re.kr/handle/201004/36481
Appears in Collections:
KIST Publication > Conference Paper
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