The phenomena of AC electroosmosis (ACEO) and dielectrophoresis (DEP) which are AC electrokinetics (ACEK) phenomenon but the earlier is always referred as AC electrohydrodynamic (AC ERD), have been used for many years to study, manipulate, trap, separate and collect particles of different scales and origins. The techniques have been adopted by builders of Microelectromechanical systems (MEMS) for Lab on a Chip (LaC) and Micro Total Analysis System (flTAS) for developing microfluidic devices. In this work, electrodes have been used to investigate these phenomena, to understand and optimise electroosmotic (EO) trapping. The effect of medium viscosity, medium density and temperature has been examined. It has been shown that medium viscosity is dominant over medium density as factor that affects EO trapping. It is also has ruled out centrifugal force as the dominant factor of EO trapping. Additionally, this work has investigated the effect of chamber height and electrode size on the efficiency of EO trapping.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:582879 |
| Date | January 2012 |
| Creators | Mohtar, Mohd Nazim |
| Publisher | University of Surrey |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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