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Electrorotation and dielectrophoresis

Published online by Cambridge University Press:  01 November 1999

A. D. GOATER
Affiliation:
Institute of Molecular & Biomolecular Electronics, University of Wales, Dean St., Bangor, Gwynedd LL57 1UT, UK
R. PETHIG
Affiliation:
Institute of Molecular & Biomolecular Electronics, University of Wales, Dean St., Bangor, Gwynedd LL57 1UT, UK

Abstract

Using microelectrode structures, various forms of electric fields, such as non-uniform, rotating and travelling wave, can be imposed on particles of sizes ranging from proteins and viruses to micro-organisms and cells. Each type of particle responds to the forces exerted on them in a unique way, allowing for their controlled and selective manipulation as well as their characterization. Moreover, particles of the same type but of different viability can be distinguished in a simple, reliable manner. This review outlines the principles that govern the way in which bioparticles respond to these various field types, and how they can be exploited. Examples of current and potential biotechnological and biomedical applications are given, along with a critical comparison of current techniques.

Type
Future trends
Copyright
© 1999 Cambridge University Press

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