Electro-viscoelastic migration under simultaneously applied microfluidic pressure-driven flow and electric field

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buir.contributor.authorSerhatlıoğlu, Murat
buir.contributor.authorIşıksaçan, Ziya
buir.contributor.authorÖzkan, Melis
buir.contributor.authorTuncel, Dönüş
buir.contributor.authorElbüken, Çağlar
dc.citation.epage6940en_US
dc.citation.issueNumber10en_US
dc.citation.spage6932en_US
dc.citation.volumeNumber92en_US
dc.contributor.authorSerhatlıoğlu, Murat
dc.contributor.authorIşıksaçan, Ziya
dc.contributor.authorÖzkan, Melis
dc.contributor.authorTuncel, Dönüş
dc.contributor.authorElbüken, Çağlar
dc.date.accessioned2021-02-17T07:34:51Z
dc.date.available2021-02-17T07:34:51Z
dc.date.issued2020-04
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.departmentNanotechnology Research Center (NANOTAM)en_US
dc.description.abstractUnder the simultaneous use of pressure-driven flow and DC electric field, migration of particles inside microfluidic channels exhibits intricate focusing dynamics. Available experimental and analytical studies fall short in giving a thorough explanation to particle equilibrium states. Also, the understanding is so far limited to the results based on Newtonian and neutral viscoelastic carrier fluids. Hence, a holistic approach is taken in this study to elaborate the interplay of governing electrophoretic and slip-induced/elastic/shear gradient lift forces. First, we carried out experimental studies on particle migration in Newtonian, neutral viscoelastic, and polyelectrolyte viscoelastic media to provide a comprehensive understanding of particle migration. The experiments with the viscoelastic media led to contradictory results with the existing explanations. Then, we introduced the Electro-Viscoelastic Migration (EVM) theory to give a unifying explanation to particle migration in Newtonian and viscoelastic solutions. Confocal imaging with fluorescent-labeled polymer solutions was used to explore the underlying migration behavior. A surprising outcome of our results is the formation of cross-sectionally nonuniform viscoelasticity that may have unique applications in microfluidic particle focusing.en_US
dc.identifier.doi10.1021/acs.analchem.9b05620en_US
dc.identifier.issn0003-2700
dc.identifier.urihttp://hdl.handle.net/11693/73418
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1021/acs.analchem.9b05620en_US
dc.source.titleAnalytical Chemistryen_US
dc.titleElectro-viscoelastic migration under simultaneously applied microfluidic pressure-driven flow and electric fielden_US
dc.typeArticleen_US
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Institute of Materials Science and Nanotechnology (UNAM)
Nanotechnology Research Center (NANOTAM)