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Quantifying dielectrophoretic collections of sub-micron particles on microelectrodes

Record type: Article

This paper presents a technique for measuring and quantifying the elelectrohporetic collection of sub-micron particles on planar microelectrode arrays. Fluorescence microscopy and video recording is used to measure the number of particles collecting on an electrode as a function of time for various experimental parameters, such as applied electrode voltage and frequency. Video images are processed using analytical methods that take advantage of the geometrical properties of the electrode array to extract quantitative information which is used to characterize the dielectric properties of particles. The time-dependent collection profiles can be chracterized by three parameters: the initial dielectrophoretic collection rate, the initial to pseudo-steady-state transition and the rise time. This method can be used asa general technique to characterize the dielectrophoretic properties of populations of sub-micron-scale particles.

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Citation

Bakewell, David and Morgan, Hywel (2004) Quantifying dielectrophoretic collections of sub-micron particles on microelectrodes Measurement Science and Technology, 15, pp. 254-266.

More information

Published date: 2004
Keywords: non-uniform electric fields, particle concentration, dielectrophoretic collection, AC electrokinetcs, Fokker-Planck equation, dielectrophoresis, interdigitated electrode array
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 263175
URI: http://eprints.soton.ac.uk/id/eprint/263175
ISSN: 1361-6501
PURE UUID: 056fecd2-a743-47e3-8272-cff32a860842
ORCID for Hywel Morgan: ORCID iD orcid.org/0000-0003-4850-5676

Catalogue record

Date deposited: 13 Nov 2006
Last modified: 18 Jul 2017 08:43

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Contributors

Author: David Bakewell
Author: Hywel Morgan ORCID iD

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