Equipment grant for interfacial velocimetry and 3d liquid-phase thermometry in microfluidic devices

dc.contributor.author Yoda, Minami
dc.contributor.author Kazoe, Yutaka
dc.contributor.author Cevheri, Necmettin
dc.contributor.corporatename Georgia Institute of Technology. Office of Sponsored Programs en_US
dc.contributor.corporatename Georgia Institute of Technology. School of Mechanical Engineering en_US
dc.date.accessioned 2019-04-24T19:38:07Z
dc.date.available 2019-04-24T19:38:07Z
dc.date.issued 2012-05
dc.description Issued as final report en_US
dc.description.abstract In 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.sponsorship National Science Foundation (U.S.) en_US
dc.identifier.uri http://hdl.handle.net/1853/61002
dc.language.iso en_US en_US
dc.publisher Georgia Institute of Technology en_US
dc.relation.ispartofseries School of Mechanical Engineering ; Project no. 112535 en_US
dc.subject Colloidal particles en_US
dc.subject Evanescent wave en_US
dc.subject Electrokinetics en_US
dc.subject Microfluidic devices
dc.title Equipment grant for interfacial velocimetry and 3d liquid-phase thermometry in microfluidic devices en_US
dc.type Text
dc.type.genre Technical Report
dspace.entity.type Publication
local.contributor.author Yoda, Minami
local.contributor.corporatename George W. Woodruff School of Mechanical Engineering
relation.isAuthorOfPublication d318e6bc-95be-4fd2-bb0a-19fe480686df
relation.isOrgUnitOfPublication c01ff908-c25f-439b-bf10-a074ed886bb7
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