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Article: Electro-osmotic flow through a thin channel with gradually varying wall potential and hydrodynamic slippage
Title | Electro-osmotic flow through a thin channel with gradually varying wall potential and hydrodynamic slippage |
---|---|
Authors | |
Keywords | Applied field Channel height Combined effect Convection patterns Electroosmotic flow |
Issue Date | 2012 |
Publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://www.iop.org/journals/fdr |
Citation | Fluid Dynamics Research, 2012, v. 44 n. 5, article no. 055507 How to Cite? |
Abstract | The lubrication approximation is applied to electro-osmotic flow through a thin parallel-plate channel under the combined effect of charge and hydrodynamic slippage modulation on the walls. The walls are periodically patterned for the charge and slip distributions, with a wavelength much longer than the channel height. It is shown that the phase of the wall patterns will play a significant role in determining the section-averaged velocity as well as the local convection pattern, both quantitatively and qualitatively. The effect of the phase on the flow will be dramatically different, depending on whether the electric field is applied along or perpendicular to the varying direction of the patterns. The possibility of generating a net flow in a direction perpendicular to the applied field is demonstrated. © 2012 The Japan Society of Fluid Mechanics and IOP Publishing Ltd. |
Persistent Identifier | http://hdl.handle.net/10722/164225 |
ISSN | 2023 Impact Factor: 1.3 2023 SCImago Journal Rankings: 0.322 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ng, CO | en_US |
dc.contributor.author | Zhou, Q | en_US |
dc.date.accessioned | 2012-09-20T07:56:42Z | - |
dc.date.available | 2012-09-20T07:56:42Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Fluid Dynamics Research, 2012, v. 44 n. 5, article no. 055507 | en_US |
dc.identifier.issn | 0169-5983 | - |
dc.identifier.uri | http://hdl.handle.net/10722/164225 | - |
dc.description.abstract | The lubrication approximation is applied to electro-osmotic flow through a thin parallel-plate channel under the combined effect of charge and hydrodynamic slippage modulation on the walls. The walls are periodically patterned for the charge and slip distributions, with a wavelength much longer than the channel height. It is shown that the phase of the wall patterns will play a significant role in determining the section-averaged velocity as well as the local convection pattern, both quantitatively and qualitatively. The effect of the phase on the flow will be dramatically different, depending on whether the electric field is applied along or perpendicular to the varying direction of the patterns. The possibility of generating a net flow in a direction perpendicular to the applied field is demonstrated. © 2012 The Japan Society of Fluid Mechanics and IOP Publishing Ltd. | - |
dc.language | eng | en_US |
dc.publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://www.iop.org/journals/fdr | en_US |
dc.relation.ispartof | Fluid Dynamics Research | en_US |
dc.rights | Fluid Dynamics Research. Copyright © Institute of Physics Publishing Ltd. | - |
dc.subject | Applied field | - |
dc.subject | Channel height | - |
dc.subject | Combined effect | - |
dc.subject | Convection patterns | - |
dc.subject | Electroosmotic flow | - |
dc.title | Electro-osmotic flow through a thin channel with gradually varying wall potential and hydrodynamic slippage | en_US |
dc.type | Article | en_US |
dc.identifier.email | Ng, CO: cong@hku.hk | en_US |
dc.identifier.authority | Ng, CO=rp00224 | en_US |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1088/0169-5983/44/5/055507 | - |
dc.identifier.scopus | eid_2-s2.0-84866316622 | - |
dc.identifier.hkuros | 208149 | en_US |
dc.identifier.volume | 44 | en_US |
dc.identifier.issue | 5, article no. 055507 | en_US |
dc.identifier.isi | WOS:000308914500007 | - |
dc.publisher.place | United Kingdom | - |
dc.identifier.issnl | 0169-5983 | - |