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Title: Numerical study of DC-biased AC-electrokinetic flow over symmetrical electrodes
Authors: Ng, Wee Yang
Ramos, Antonio
Lam, Yee Cheong
Rodriguez, Isabel
Issue Date: 2012
Source: Ng, W. Y., Ramos, A., Lam, Y. C., & Rodriguez, I. (2012). Numerical study of DC-biased AC-electrokinetic flow over symmetrical electrodes. Biomicrofluidics, 6(1).
Series/Report no.: Biomicrofluidics
Abstract: This paper presents a numerical study of DC-biased AC-electrokinetic (DC-biased ACEK) flow over a pair of symmetrical electrodes. The flow mechanism is based on a transverse conductivity gradient created through incipient Faradaic reactions occurring at the electrodes when a DC-bias is applied. The DC biased AC electric field acting on this gradient generates a fluid flow in the form of vortexes. To understand more in depth the DC-biased ACEK flow mechanism, a phenomenological model is developed to study the effects of voltage, conductivity ratio, channel width, depth, and aspect ratio on the induced flow characteristics. It was found that flow velocity on the order of mm/s can be produced at higher voltage and conductivity ratio. Such rapid flow velocity is one of the highest reported in microsystems technology using electrokinetics.
ISSN: 1932-1058
DOI: 10.1063/1.3668262
Rights: © 2012 American Institute of Physics. This paper was published in Biomicrofluidics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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