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Pumping of liquids with ac voltages applied to asymmetric pairs of microelectrodes

Pumping of liquids with ac voltages applied to asymmetric pairs of microelectrodes
Pumping of liquids with ac voltages applied to asymmetric pairs of microelectrodes
The net flow of electrolyte induced by an ac electric potential applied to an array of asymmetric pairs of microelectrodes has recently been reported. The interaction between the oscillating electric field and the oscillating induced charge at the diffuse double layer on the electrodes results in a steady electro-osmotic velocity distribution on top of the electrodes. This slip velocity distribution is anisotropic and produces a net flow of fluid. This paper presents a theoretical analysis of the pumping phenomena based upon an electro osmotic model in ac fields. The electrical equations are solved numerically using the charge simulation method. The bulk flow generated by the electro-osmotic slip velocity is calculated. The dependence of the fluid flow on voltage and frequency is described and compared to experiments
1539-3755
56302
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Gonzalez, Antonio
41d6e3cb-9a9a-499a-89b3-a2872864e9d3
Castellanos, Antonio
aa989a75-63b0-4f3e-a36b-370545034d7b
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Gonzalez, Antonio
41d6e3cb-9a9a-499a-89b3-a2872864e9d3
Castellanos, Antonio
aa989a75-63b0-4f3e-a36b-370545034d7b
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174

Ramos, Antonio, Gonzalez, Antonio, Castellanos, Antonio, Green, Nicolas G and Morgan, Hywel (2003) Pumping of liquids with ac voltages applied to asymmetric pairs of microelectrodes. Physical Review E, 67, 56302. (doi:10.1103/PhysRevE.67.056302).

Record type: Article

Abstract

The net flow of electrolyte induced by an ac electric potential applied to an array of asymmetric pairs of microelectrodes has recently been reported. The interaction between the oscillating electric field and the oscillating induced charge at the diffuse double layer on the electrodes results in a steady electro-osmotic velocity distribution on top of the electrodes. This slip velocity distribution is anisotropic and produces a net flow of fluid. This paper presents a theoretical analysis of the pumping phenomena based upon an electro osmotic model in ac fields. The electrical equations are solved numerically using the charge simulation method. The bulk flow generated by the electro-osmotic slip velocity is calculated. The dependence of the fluid flow on voltage and frequency is described and compared to experiments

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Published date: 2003
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 263184
URI: https://eprints.soton.ac.uk/id/eprint/263184
ISSN: 1539-3755
PURE UUID: 25afed61-6ce9-407a-b8b6-c5a84f4b83c5
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: 14 Nov 2006
Last modified: 10 Sep 2019 00:45

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