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Use of combined dielectrophoretic/electrohydrodynamic forces for biosensor enhancement

Hoettges, KF, McDonnell, MB and Hughes, MP (2003) Use of combined dielectrophoretic/electrohydrodynamic forces for biosensor enhancement JOURNAL OF PHYSICS D-APPLIED PHYSICS, 36 (20), PII S0. L101-L104.

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Abstract

Dielectrophoretic and electrohydrodynamic forces have been demonstrated in the literature to cause movement of particles across the surface of planar electrodes when exposed to low-frequency (≈1 kHz) electric fields. In this paper we describe the development of this phenomenon for collection of particles, covering a range of sizes, out of a liquid and focusing them at the centre of a novel electrode consisting of large interlocking circles. The volume of analyte across which this effect is observed is significantly larger than has been reported for conventional dielectrophoretic arrays. By altering the experimental conditions, particles can either be collected or cycled across the surface and then removed. This technique offers great scope for enhancement of surface-based detection methods.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences
Authors :
AuthorsEmailORCID
Hoettges, KFUNSPECIFIEDUNSPECIFIED
McDonnell, MBUNSPECIFIEDUNSPECIFIED
Hughes, MPUNSPECIFIEDUNSPECIFIED
Date : 21 October 2003
Identification Number : 10.1088/0022-3727/36/20/L01
Uncontrolled Keywords : Science & Technology, Physical Sciences, Physics, Applied, Physics, PHYSICS, APPLIED, AC ELECTRIC-FIELDS, INDUCED FLUID-FLOW, COLLOIDAL PARTICLES, MICROELECTRODES, ELECTROLYTES
Related URLs :
Additional Information : This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics D: Applied Physics. The publisher is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0022-3727/36/20/L01. © 2003 IOP Publishing Ltd
Depositing User : Symplectic Elements
Date Deposited : 07 Oct 2015 15:03
Last Modified : 07 Oct 2015 15:03
URI: http://epubs.surrey.ac.uk/id/eprint/808518

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