Electrokinetic particle migration in heterogeneous electrolyte systems

Shankar Devasenathipathy, Juan G. Santiago, Takahiro Yamamoto, Yohei Sato, Koichi Hishida

Research output: Contribution to journalConference article

Abstract

This paper presents a preliminary evaluation of an electrokinetic process for the buffer transfer and stacking of charged colloidal particles in solution. The mechanism exploits the effects of particle stacking across streamlines in a flow with electrical conductivity gradients transverse to the flow direction. Particle velocity fields and particle concentration measurements in a T-shaped microchannel system are presented. Upon application of an electric field, negatively charged particles are extracted from a low conductivity stream and stacked into a high conductivity stream. A simplified numerical model of the process with a commercial software code captures the generation of a transverse electric field.

Original languageEnglish
Pages (from-to)629-634
Number of pages6
JournalAmerican Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume259
DOIs
Publication statusPublished - 2003 Jan 1
Event2003 ASME International Mechanical Engineering Congress - Washington, DC., United States
Duration: 2003 Nov 152003 Nov 21

ASJC Scopus subject areas

  • Engineering(all)

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