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Ac electrokinetics: a survey of sub-micrometre particle dynamics

Ac electrokinetics: a survey of sub-micrometre particle dynamics
Ac electrokinetics: a survey of sub-micrometre particle dynamics
Particles suspended in fluid exhibit motion when subjected to ac electric fields. The applied field results in forces on both the particles and the fluid, the study of which is referred to as ac electrokinetics. The ac electrokinetic techniques can be used for the controlled manipulation and characterization of particles, and the separation of mixtures. For sub-micrometre particles, Brownian motion is important and strong electric fields are required to overcome these effects. Planar micro-electrode arrays, fabricated using semiconductor manufacturing processes, can generate electric fields of the required strength from low potentials over a wide range of frequencies. This paper reviews and discusses sub-micrometre particle dynamics under the influence of dielectrophoretic and electrohydrodynamic forces. New experimental observations of the movement of sub-micrometre particles are also presented.
0022-3727
632-641
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Ramos, Antonio
511ab594-f312-45ce-b7ff-ef348fd9b559
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174

Green, Nicolas G, Ramos, Antonio and Morgan, Hywel (2000) Ac electrokinetics: a survey of sub-micrometre particle dynamics. Journal of Physics D: Applied Physics, 33 (6), 632-641. (doi:10.1088/0022-3727/33/6/308).

Record type: Article

Abstract

Particles suspended in fluid exhibit motion when subjected to ac electric fields. The applied field results in forces on both the particles and the fluid, the study of which is referred to as ac electrokinetics. The ac electrokinetic techniques can be used for the controlled manipulation and characterization of particles, and the separation of mixtures. For sub-micrometre particles, Brownian motion is important and strong electric fields are required to overcome these effects. Planar micro-electrode arrays, fabricated using semiconductor manufacturing processes, can generate electric fields of the required strength from low potentials over a wide range of frequencies. This paper reviews and discusses sub-micrometre particle dynamics under the influence of dielectrophoretic and electrohydrodynamic forces. New experimental observations of the movement of sub-micrometre particles are also presented.

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J15_Green_Ramos_Morgan_J_Physics_D_Applied_Physics_2000.pdf - Other
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More information

Published date: 21 March 2000
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 356167
URI: https://eprints.soton.ac.uk/id/eprint/356167
ISSN: 0022-3727
PURE UUID: 0273b0c5-999b-4540-8089-f5fe8fefb820
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: 22 Nov 2013 13:58
Last modified: 10 Sep 2019 00:45

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