AC Electric-Field-Induced Fluid Flow in Microelectrode Structures: Scaling Laws.


Castellanos , Antonio, Ramos, Antonio, González, Antonio, Green, Nicolas G and Morgan, Hywel (2002) AC Electric-Field-Induced Fluid Flow in Microelectrode Structures: Scaling Laws. In, 14' International Conference on Dielectric Liquids (ICDL 2002), 07 - 12 Jul 2002. IEEE, 52-55. (doi:10.1109/ICDL.2002.1022692).

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Description/Abstract

The motion of polarizable bioparticles under the action of non-uniform ac electric fields is known as dielectrophoresis. Because submicrometre particles are subjected to Brownian motion, high electric fields are needed to manipulate them. However, these high electric fields give rise to fluid motion, which in turn results in a viscous drag on the particles. The electric fields generate beat, leading to gradients in conductivity, permittivity, and mass density in the fluid. These gradients give rise to electrothermal forces and buoyancy. Also non-uniform ac electric fields produce forces on the induced charges in the diffuse double layer on the electrodes, that results in fluid motion. Here we characterize these flows and their domain of influence.

Item Type: Conference or Workshop Item (Paper)
ISBNs: 0780373502 (print)
Related URLs:
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science
ePrint ID: 266517
Date Deposited: 05 Aug 2008 15:31
Last Modified: 02 Dec 2014 14:01
Further Information:Google Scholar
ISI Citation Count:0
URI: http://eprints.soton.ac.uk/id/eprint/266517

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