Effect of dielectric constant on particle-particle dielectrophoretic attraction in dielectric fluids

C. P. Bowen, R. E. Newnham, Clive A. Randall

Research output: Contribution to conferencePaper

Abstract

The aim of this study was to investigate how the particulate phase dielectric constant impacts the dielectrophoretic force in an organic fluid suspension. This was accomplished through the construction of an apparatus which allowed the direct measurement of the dielectrophoretic force of attraction between macroscopic ceramic hemispheres submerged in an uncrosslinked thermoset polyurethane carrier fluid. The analysis of the experimental data show that the dielectrophoretic force increases with particle dielectric constant under AC fields but the same relationship does not hold when applying DC fields. This is believed to occur owing to the relaxation of the conduction mechanism under an alternating electric field.

Original languageEnglish (US)
Pages879-882
Number of pages4
StatePublished - Dec 1 1996
EventProceedings of the 1996 10th IEEE International Symposium on Applications of Ferroelectrics, ISAF. Part 1 (of 2) - East Brunswick, NJ, USA
Duration: Aug 18 1996Aug 21 1996

Other

OtherProceedings of the 1996 10th IEEE International Symposium on Applications of Ferroelectrics, ISAF. Part 1 (of 2)
CityEast Brunswick, NJ, USA
Period8/18/968/21/96

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Bowen, C. P., Newnham, R. E., & Randall, C. A. (1996). Effect of dielectric constant on particle-particle dielectrophoretic attraction in dielectric fluids. 879-882. Paper presented at Proceedings of the 1996 10th IEEE International Symposium on Applications of Ferroelectrics, ISAF. Part 1 (of 2), East Brunswick, NJ, USA, .