Is free surface free in micro-scale electrokinetic flows?
SCIE
SCOPUS
- Title
- Is free surface free in micro-scale electrokinetic flows?
- Authors
- Choi, W; Sharma, A; Qian, S; Lim, G; Joo, SW
- Date Issued
- 2010-07-01
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Abstract
- When a rigid boundary is replaced by a free surface, or by a liquid-liquid interface, the shear stress is reduced near the boundary because the no-slip on the rigid boundary is relaxed. A nonzero fluid velocity exists on the free surface, and the flow rate would increase by the replacement. For electrokinetic flows, however, the replacement from rigid to free boundary can lead to an increase (decrease) in shear stress (flow rate). This counterintuitive effect of free surface is presented in this note for a generic electroosmotic flow in a microchannel. (C) 2010 Elsevier Inc. All rights reserved.
- Keywords
- Electroosmosis; Free surface; Electrokinetics; Microfluidics; Interfacial flows; 2-FLUID ELECTROOSMOTIC FLOW; ELECTRIC-FIELD; INSTABILITY; INTERFACE; ELECTROHYDRODYNAMICS; MICROCHANNELS; STABILITY; FILMS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25855
- DOI
- 10.1016/J.JCIS.2010.03.049
- ISSN
- 0021-9797
- Article Type
- Article
- Citation
- JOURNAL OF COLLOID AND INTERFACE SCIENCE, vol. 347, no. 1, page. 153 - 155, 2010-07-01
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- There are no files associated with this item.
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