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