Electrothermally induced fluid flow on microelectrodes
Electrothermally induced fluid flow on microelectrodes
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.
71-87
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Gonzalez, Antonio
41d6e3cb-9a9a-499a-89b3-a2872864e9d3
Castellanos, Antonio
aa989a75-63b0-4f3e-a36b-370545034d7b
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
August 2001
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Gonzalez, Antonio
41d6e3cb-9a9a-499a-89b3-a2872864e9d3
Castellanos, Antonio
aa989a75-63b0-4f3e-a36b-370545034d7b
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Green, Nicolas G, Ramos, Antonio, Gonzalez, Antonio, Castellanos, Antonio and Morgan, Hywel
(2001)
Electrothermally induced fluid flow on microelectrodes.
Journal of Electrostatics, 53 (2), .
(doi:10.1016/S0304-3886(01)00132-2).
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.
Text
J16_Green_Ramos_Gonzalez_Castellanos_Morgan_J_Electrostatics_2001.pdf
- Other
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
Catalogue record
Date deposited: 03 Aug 2008 22:40
Last modified: 15 Mar 2024 03:20
Export record
Altmetrics
Contributors
Author:
Nicolas G Green
Author:
Antonio Ramos
Author:
Antonio Gonzalez
Author:
Antonio Castellanos
Author:
Hywel Morgan
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics