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DC dielectrophoretic focusing of particles in a serpentine microchannel

  • Junjie Zhu
  • , Tzuen Rong J. Tzeng
  • , Guoqing Hu
  • , Xiangchun Xuan

Research output: Contribution to journalArticlepeer-review

Abstract

Focusing particles into a tight stream is usually a necessary step prior to separating and sorting them. We present herein a proof-of-concept experiment of a novel particle focusing technique in DC electrokinetic flow through a planar serpentine microchannel. This focusing stems from the cross-stream dielectrophoretic motion induced within the channel turns. The observed particle focusing behavior is consistent with the predicted particle trajectories from a numerical modeling.

Original languageEnglish (US)
Pages (from-to)751-756
Number of pages6
JournalMicrofluidics and Nanofluidics
Volume7
Issue number6
DOIs
StatePublished - Dec 2009
Externally publishedYes

Bibliographical note

Funding Information:
Acknowledgments The support from Clemson University through a start-up package and a Research Equipment Fund to Xuan is gratefully acknowledged. The support from the State Key Laboratory of Nonlinear Mechanics in China is also gratefully appreciated.

Keywords

  • DC dielectrophoresis
  • Electrokinetic flow
  • Particle focusing
  • Serpentine microchannel

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