A note on the electrostatic force and torque acting on an isolated body in an electric field

N. J. Rivette, J. C. Baygents

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

Expressions for the electrostatic force and torque on an isolated body immersed in a dielectric medium have been developed for the case where the imposed electric field is either uniform or varies linearly with position. The expressions apply to a body of general shape that carries no net native charge; illustrative examples are provided for ellipsoidal and spheroidal bodies. The force on a body in a uniform field is shown to be zero, which rectifies an incorrect result derived previously by others. The expressions obtained can be adapted to dielectric, leaky dielectric and perfectly conducting bodies subject to either dc or ac forcing fields.

Original languageEnglish (US)
Pages (from-to)5205-5211
Number of pages7
JournalChemical Engineering Science
Volume51
Issue number23
DOIs
StatePublished - Dec 1996

Keywords

  • Dielectrophoresis
  • electrorotation

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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