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Electrothermally induced fluid flow on microelectrodes

Green, Nicolas G, Ramos, Antonio, Gonzalez, Antonio, Castellanos, Antonio and Morgan, Hywel (2001) Electrothermally induced fluid flow on microelectrodes Journal of Electrostatics, 53, (2), pp. 71-87. (doi:10.1016/S0304-3886(01)00132-2).

Record type: Article

Abstract

Planar microelectrodes, used for the electrokinetic manipulation of particles, generate high strength AC electric fields, resulting not only in forces on the particles but also on the suspending fluid. Observations of electrolytes on microelectrode structures at applied signal frequencies of the order of 1 MHz have shown the importance of the illumination in generating fluid flow. In this paper, these experiments are analysed in terms of the theory of electrothermally induced fluid flow. Numerical calculations are made of the electric field, temperature field and fluid flow, arising both from Joule heating and from light heating. The results verify that Joule heating is not important under the experimental conditions. The temperature gradient generated by the light that is required in order to match the experimental fluid velocities is determined.

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More information

Published date: August 2001
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 266491
URI: http://eprints.soton.ac.uk/id/eprint/266491
ISSN: 0304-3886
PURE UUID: cd431f09-f897-4c6f-ba0b-35a5132cdf34
ORCID for Nicolas G Green: ORCID iD orcid.org/0000-0001-9230-4455
ORCID for Hywel Morgan: ORCID iD orcid.org/0000-0003-4850-5676

Catalogue record

Date deposited: 03 Aug 2008 22:40
Last modified: 18 Jul 2017 07:16

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Contributors

Author: Nicolas G Green ORCID iD
Author: Antonio Ramos
Author: Antonio Gonzalez
Author: Antonio Castellanos
Author: Hywel Morgan ORCID iD

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