Electroosmotic flow control in a virtual microchannel based on liquid dielectrophoresis

Cheng Yeh Huang*, Shih Kang Fan, Wen-Syang Hsu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The electroosmotic flow (EOF) velocity control in a wall-less virtual microchannel is successfully demonstrated here by liquid dielectrophoresis (LDEP). The geometry of the virtual microchannel was determined by the electrode patterns on both top plate and bottom plate. The device is a sandwich structure consisting of hydrophobic layers, dielectric layers, ITO glass plates, and liquid. Neutral fluorescent polystyrene beads are introduced to verify the velocity of EOF. The recorded video indicated the velocity of EOF. The effect of EOF velocity and the effect of the capillary electrophoresis (CE) in the virtual microchannel under different electric field are investigated here. Based on the EOF control studies, capillary electrophoresis would be possible by the proposed liquid manipulation mechanism and structure.

Original languageEnglish
Title of host publicationNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems
Pages1116-1119
Number of pages4
DOIs
StatePublished - 4 Oct 2011
Event6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011 - Kaohsiung, Taiwan
Duration: 20 Feb 201123 Feb 2011

Publication series

NameNEMS 2011 - 6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems

Conference

Conference6th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2011
CountryTaiwan
CityKaohsiung
Period20/02/1123/02/11

Keywords

  • electroosmotic flow
  • liquid dielectrophoresis
  • virtual microchannel

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