DEPENDENCE OF EFFECTIVE ZETA-POTENTIAL ON ELECTROLYTE CONCENTRATION

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F09%3A00021961" target="_blank" >RIV/60461373:22340/09:00021961 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
DEPENDENCE OF EFFECTIVE ZETA-POTENTIAL ON ELECTROLYTE CONCENTRATION
Original language description
When the outer electric field is applied tangentially to the microchannel surface, the Coulomb force acts on generated electric charge and the combination of Coulomb, viscous and pressure forces causes the net flow through the channel. This phenomenon iscalled direct current (DC) electroosmosis. It was experimentally discovered that velocity of electrokinetic flow depends on the electrolyte concentration. In contrast with this, the traditional theory predicts that the velocity of electrokinetic flow does not depend on electrolyte concentration; it depends only on value of zeta-potential. The value of zeta-potential was experimentally determined from measured velocity by Helmholtz-Smoluchowski approximation. We model the system with Poisson-Nernst-Planck equations. We want to verify that the surface roughness affects the electrokinetic flow and its concentration dependence.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of 36th International Conference of Slovak Society of Chemical Engineering
ISBN
978-80-227-3072-3
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
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Publisher name
Slovak University of Technology
Place of publication
Bratislava
Event location
Tatranské Matliare
Event date
May 25, 2009
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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