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dc.contributor.authorYoda, Minami
dc.contributor.authorKazoe, Yutaka
dc.contributor.authorCevheri, Necmettin
dc.date.accessioned2019-04-24T19:38:07Z
dc.date.available2019-04-24T19:38:07Z
dc.date.issued2012-05
dc.identifier.urihttp://hdl.handle.net/1853/61002
dc.descriptionIssued as final reporten_US
dc.description.abstractIn terms of colloid science, these experiments have demonstrated that an electric field applied parallel to the wall creates an additional nonlinear electrokinetic force that repels near-wall (i.e., those less than 300 nm from the wall) particles of radii ranging from 0.2 um to 0.5 um. The measurements verify previous theoretical predictions of a force that scales with the square of the electric field magnitude and the square of the particle radius, albeit with a magnitude one to two orders of magnitude greater than that predicted by the theory (note that the original theory was developed for 'remote wall-sphere interactions'). In terms of fluid mechanics, this result suggests that knowledge of the near-wall particle distribution will be required to accurately measure near-wall velocity fields with particle velocimetry techniques (e.g. micro-PIV and evanescent-wave particle velocimetry). Without this knowledge, using tracers of different diameters in these techniques will give different results for the velocity field for a shear flow where there is an electric field parallel to the wall, such as combined electroosmotic and Poiseuille flow.en_US
dc.description.sponsorshipNational Science Foundation (U.S.)en_US
dc.language.isoen_USen_US
dc.publisherGeorgia Institute of Technologyen_US
dc.relation.ispartofseriesSchool of Mechanical Engineering ; Project no. 112535en_US
dc.subjectColloidal particlesen_US
dc.subjectEvanescent waveen_US
dc.subjectElectrokineticsen_US
dc.subjectMicrofluidic devices
dc.titleEquipment grant for interfacial velocimetry and 3d liquid-phase thermometry in microfluidic devicesen_US
dc.typeTechnical Reporten_US
dc.contributor.corporatenameGeorgia Institute of Technology. Office of Sponsored Programsen_US
dc.contributor.corporatenameGeorgia Institute of Technology. School of Mechanical Engineeringen_US


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