Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing.
We show that coupled electrorotation (CER) of microscopic particles using microfabricated electrodes can be used for localized sensing and mixing. The effective use of microelectromechanical systems and micro total analysis systems requires many types of control. These include the abilityto (1) mani...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2002
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| _version_ | 1797051208395915264 |
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| author | Wilson, C Wallace, M Morishima, K Simpson, G Zare, R |
| author_facet | Wilson, C Wallace, M Morishima, K Simpson, G Zare, R |
| author_sort | Wilson, C |
| collection | OXFORD |
| description | We show that coupled electrorotation (CER) of microscopic particles using microfabricated electrodes can be used for localized sensing and mixing. The effective use of microelectromechanical systems and micro total analysis systems requires many types of control. These include the abilityto (1) manipulate objects within microchannels by noncontact means, (2) mix fluids, and (3) sense local chemical parameters. Coupled electrorotation, in which the interactions between induced electric dipoles of adjacent particles lead to particle rotation, addresses aspects of all three challenges simultaneously. CER is a simple means of controlling the rotation of dielectric objects using homogeneous external radio frequency electric fields. CER is sensitive to several chemical and physical parameters such as the solution conductivity, pH, and viscosity. As a step toward integrating CER devices into microfluidic systems, a simple chip was designed to induce local mixing and to detect local changes in salt concentration, pH, and viscosity. |
| first_indexed | 2024-03-06T18:16:40Z |
| format | Journal article |
| id | oxford-uuid:04d9508d-f12c-46ad-bed6-c056ab64d5a5 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:16:40Z |
| publishDate | 2002 |
| record_format | dspace |
| spelling | oxford-uuid:04d9508d-f12c-46ad-bed6-c056ab64d5a52022-03-26T08:53:57ZCoupled electrorotation of polymer microspheres for microfluidic sensing and mixing.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:04d9508d-f12c-46ad-bed6-c056ab64d5a5EnglishSymplectic Elements at Oxford2002Wilson, CWallace, MMorishima, KSimpson, GZare, RWe show that coupled electrorotation (CER) of microscopic particles using microfabricated electrodes can be used for localized sensing and mixing. The effective use of microelectromechanical systems and micro total analysis systems requires many types of control. These include the abilityto (1) manipulate objects within microchannels by noncontact means, (2) mix fluids, and (3) sense local chemical parameters. Coupled electrorotation, in which the interactions between induced electric dipoles of adjacent particles lead to particle rotation, addresses aspects of all three challenges simultaneously. CER is a simple means of controlling the rotation of dielectric objects using homogeneous external radio frequency electric fields. CER is sensitive to several chemical and physical parameters such as the solution conductivity, pH, and viscosity. As a step toward integrating CER devices into microfluidic systems, a simple chip was designed to induce local mixing and to detect local changes in salt concentration, pH, and viscosity. |
| spellingShingle | Wilson, C Wallace, M Morishima, K Simpson, G Zare, R Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title | Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title_full | Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title_fullStr | Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title_full_unstemmed | Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title_short | Coupled electrorotation of polymer microspheres for microfluidic sensing and mixing. |
| title_sort | coupled electrorotation of polymer microspheres for microfluidic sensing and mixing |
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