Combined negative dielectrophoresis and phase separation in nondilute suspensions subject to a high-gradient ac electric field

Anil Kumar, Zhiyong Qiu, Andreas Acrivos, Boris Khusid, David Jacqmin

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The combined negative dielectrophoresis and phase separation in concentrated suspensions of neutrally buoyant particles were studied. It was observed that when the suspensions were subjected to a high-gradient ac field, a phase separation occurred. The interparticle electric interactions were found to be responsible for the phenomenon. A electrohydrodynamic model for the one and two-phase states of a suspension, which was a generalization of the theory for thermodynamics of the field-induced phase transitions in the suspensions of polarized particles, was also discussed.

Original languageEnglish (US)
Article number021402
Pages (from-to)021402-1-021402-10
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume69
Issue number2 1
DOIs
StatePublished - Feb 1 2004

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

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