Dielectrophoretic investigations of sub-micrometre latex spheres
Dielectrophoretic investigations of sub-micrometre latex spheres
A non-uniform AC electric field induces a motion in polarizable particles, called dielectrophoresis. The force responsible for this motion is governed by the dielectric properties both of the suspending medium and of the particles, as well as the geometry of the field. The dielectrophoretic properties of sub-micrometre latex spheres have been studied using micro-fabricated electrode structures. The electric field geometry for electrodes used in the measurements has been solved using numerical analysis. Measurements of the dielectrophoretic properties of the spheres have been made over a range of medium conductivities and applied field frequencies and strengths. Comparisons between the observed behaviour and that expected from theory are presented.
2626
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
1997
Green, Nicolas G
d9b47269-c426-41fd-a41d-5f4579faa581
Morgan, Hywel
de00d59f-a5a2-48c4-a99a-1d5dd7854174
Green, Nicolas G and Morgan, Hywel
(1997)
Dielectrophoretic investigations of sub-micrometre latex spheres.
Journal of Physics D: Applied Physics, 30 (18), .
(doi:10.1088/0022-3727/30/18/018).
Abstract
A non-uniform AC electric field induces a motion in polarizable particles, called dielectrophoresis. The force responsible for this motion is governed by the dielectric properties both of the suspending medium and of the particles, as well as the geometry of the field. The dielectrophoretic properties of sub-micrometre latex spheres have been studied using micro-fabricated electrode structures. The electric field geometry for electrodes used in the measurements has been solved using numerical analysis. Measurements of the dielectrophoretic properties of the spheres have been made over a range of medium conductivities and applied field frequencies and strengths. Comparisons between the observed behaviour and that expected from theory are presented.
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J3_Green_Morgan_J_Physics_D_Applied_Physics_1997b.pdf
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Published date: 1997
Organisations:
Electronics & Computer Science
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Local EPrints ID: 372364
URI: http://eprints.soton.ac.uk/id/eprint/372364
ISSN: 0022-3727
PURE UUID: ea3c08c3-e948-4b59-bbf0-0a84adc101b5
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Date deposited: 01 Dec 2014 16:32
Last modified: 15 Mar 2024 03:20
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Author:
Nicolas G Green
Author:
Hywel Morgan
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