Studies of particle holding, separating, and focusing using convergent electrodes in microsorters

Tzong Shyng Leu, Hung Ying Chen, Fei Bin Hsiao

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper presents numerical simulation results on the efficacy of dielectrophoretic (DEP) convergent electrodes in a particle sorter. DEP forces created by non-uniform electric fields are used as holding forces to trap and select the particles from a mixture of many samples, as well as confining forces to focus the particles into a single particle stream in the microsorter for further analysis. The key mechanism of the sorter that can hold particles against destabilizing fluid flows is investigated in this study. A barrier is found at X/L =0.84 and Y =0 in the present DEP sorter. By comparing the DEP and hydrodynamic forces at the barrier, one can determine the release velocity when the zero-net-force condition ceases to exist and the particles start to be released.

Original languageEnglish
Pages (from-to)328-335
Number of pages8
JournalMicrofluidics and Nanofluidics
Volume1
Issue number4
DOIs
Publication statusPublished - 2005 Oct 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Materials Chemistry

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