Rapid concentration and manipulation of colloids and microorganisms through double layer polarization electrokinetics

S. J. Williams, J. S. Kwon, S. P. Ravindranath, J. Irudayaraj, S. T. Wereley

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper reports on a novel electrokinetic technique that can concentrate, translate, and sort colloids and microorganisms. This technique, termed rapid electrokinetic patterning (REP), uses electric double layer polarization electrokinetics for particle manipulation which is fundamentally different from dielectrophoresis which uses Maxwell-Wagner interfacial polarization. Therefore REP provides a new scheme for electrokinetic sorting based on the surface characteristics of particles and their electric double layer behavior. The concentration and sorting of bacteria (Shewanella Onidensis MR-1, Staphylococcus aureus, and Saccharomyces cerevisiae) is demonstrated herein. Also, a new non-optical REP system is introduced providing increased portability and larger colloid concentration size.

Original languageEnglish (US)
Title of host publication15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Pages840-842
Number of pages3
StatePublished - Dec 1 2011
Externally publishedYes
Event15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 - Seattle, WA, United States
Duration: Oct 2 2011Oct 6 2011

Publication series

Name15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Volume2

Other

Other15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
CountryUnited States
CitySeattle, WA
Period10/2/1110/6/11

Keywords

  • Colloids
  • Dielectrophoresis
  • Double-layer
  • Electrokinetics
  • Polarization

ASJC Scopus subject areas

  • Control and Systems Engineering

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  • Cite this

    Williams, S. J., Kwon, J. S., Ravindranath, S. P., Irudayaraj, J., & Wereley, S. T. (2011). Rapid concentration and manipulation of colloids and microorganisms through double layer polarization electrokinetics. In 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 (pp. 840-842). (15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011; Vol. 2).