Dielectrophoretic trapping of particles at the three-phase contact line

Anil Kumar, Boris Khusid, Andreas Acrivos

Research output: Contribution to journalArticlepeer-review


Dielectrophoresis of suspended polarizable particles is generated by destabilizing a flat interface between two fluids with a spatially uniform ac field. The strong field gradients that are created near the three-phase contact lines of the electrically formed fluid patterns cause the particles to accumulate there and to build a sharp and distinct boundary between regions enriched in and depleted of particles. This straightforward technique does not require the fabrication of complicated electric devices for the dielectrophoretic manipulation and separation of particles.

Original languageEnglish (US)
Pages (from-to)6978-6980
Number of pages3
JournalIndustrial and Engineering Chemistry Research
Issue number21
StatePublished - Oct 11 2006

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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