Electrokinetic particle migration in heterogeneous electrolyte systems

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

doi:10.1115/IMECE2003-43966

Electrokinetic particle migration in heterogeneous electrolyte systems

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

Department of System Design Engineering

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Pages (from-to)	629-634
Number of pages	6
Journal	American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
Volume	259
DOIs	https://doi.org/10.1115/IMECE2003-43966
Publication status	Published - 2003 Jan 1
Event	2003 ASME International Mechanical Engineering Congress - Washington, DC., United States Duration: 2003 Nov 15 → 2003 Nov 21

ASJC Scopus subject areas

Engineering(all)

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10.1115/IMECE2003-43966

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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.",

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AU - Devasenathipathy, Shankar

AU - Santiago, Juan G.

AU - Yamamoto, Takahiro

AU - Sato, Yohei

AU - Hishida, Koichi

PY - 2003/1/1

Y1 - 2003/1/1

N2 - 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.

AB - 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.

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EP - 634

JO - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

JF - American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED

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Y2 - 15 November 2003 through 21 November 2003

ER -

Electrokinetic particle migration in heterogeneous electrolyte systems

Abstract

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