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dc.contributor.authorLam, YC
dc.contributor.authorGan, HY
dc.contributor.authorNguyen, NT
dc.contributor.authorLie, H
dc.date.accessioned2017-05-03T12:45:04Z
dc.date.available2017-05-03T12:45:04Z
dc.date.issued2009
dc.date.modified2014-09-04T04:25:52Z
dc.identifier.issn1932-1058
dc.identifier.doi10.1063/1.3108462
dc.identifier.urihttp://hdl.handle.net/10072/62224
dc.description.abstractWe exploited the viscoelasticity of biocompatible dilute polymeric solutions, namely, dilute poly(ethylene oxide) solutions, to significantly enhance mixing in microfluidic devices at a very small Reynolds number, i.e., Re谮023, but large Peclet and elasticity numbers. With an abrupt contraction microgeometry (8:1 contraction ratio), two different dilute poly(ethylene oxide) solutions were successfully mixed with a short flow length at a relatively fast mixing time of <10 峮 Microparticle image velocimetry was employed in our investigations to characterize the flow fields. The increase in velocity fluctuation with an increase in flow rate and Deborah number indicates the increase in viscoelastic flow instability.Mixing efficiency was characterized by fluorescent concentration measurements. Our results showed that enhanced mixing can be achieved through viscoelastic flow instability under situations where molecular-diffusion and inertia effects are negligible. This approach bypasses the laminar flow limitation, usually associated with a low Reynolds number, which is not conducive to mixing.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.format.extent495599 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglish
dc.language.isoeng
dc.publisherAmerican Institute of Physics
dc.publisher.placeUnited States
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom014106-1
dc.relation.ispartofpageto014106-13
dc.relation.ispartofjournalBiomicrofluidics
dc.relation.ispartofvolume3
dc.rights.retentionY
dc.subject.fieldofresearchClassical physics
dc.subject.fieldofresearchEngineering practice and education not elsewhere classified
dc.subject.fieldofresearchNanotechnology
dc.subject.fieldofresearchcode5103
dc.subject.fieldofresearchcode401099
dc.subject.fieldofresearchcode4018
dc.titleMicromixer based on viscoelastic flow instability at low Reynolds number
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.rights.copyright© 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Biomicrofluidics, Vol. 3, pp. 014106-1-014106-13, 2009 and may be found at http://dx.doi.org/10.1063/1.3108462.
gro.date.issued2009
gro.hasfulltextFull Text
gro.griffith.authorNguyen, Nam-Trung


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