Flow rate-modified streaming effects in heterogeneous microchannels

Junjie Zhu; Christian Davidson; Xiangchun Xuan

doi:10.1007/s10404-008-0309-1

Flow rate-modified streaming effects in heterogeneous microchannels

Junjie Zhu, Christian Davidson, Xiangchun Xuan

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A general model based on the Onsager reciprocal relations is developed to study the streaming potential and streaming current in heterogeneous microchannels. The surface heterogeneities may be symmetrically or asymmetrically distributed parallel or perpendicular to the flow axis. Both streaming effects are modified by the flow rate through the heterogeneous channel, to eliminate the possible influence of electrokinetic flow on the streaming potential and streaming current measurements. Although they are still dependent on the distribution of surface heterogeneity, the flow rate-modified streaming effects are demonstrated to provide more consistent results with the traditional linear assumption than do the traditional ones, especially apparent in small microchannels.

Original language	English (US)
Pages (from-to)	733-740
Number of pages	8
Journal	Microfluidics and Nanofluidics
Volume	5
Issue number	6
DOIs	https://doi.org/10.1007/s10404-008-0309-1
State	Published - 2008
Externally published	Yes

Bibliographical note

Funding Information:
Acknowledgments Financial support from Clemson University through a start-up package and a Research Investment Initiative Fund to X.X. is gratefully acknowledged.

Keywords

Flow rate
Heterogeneous microchannel
Onsager reciprocal relations
Streaming current
Streaming potential

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10.1007/s10404-008-0309-1

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title = "Flow rate-modified streaming effects in heterogeneous microchannels",

abstract = "A general model based on the Onsager reciprocal relations is developed to study the streaming potential and streaming current in heterogeneous microchannels. The surface heterogeneities may be symmetrically or asymmetrically distributed parallel or perpendicular to the flow axis. Both streaming effects are modified by the flow rate through the heterogeneous channel, to eliminate the possible influence of electrokinetic flow on the streaming potential and streaming current measurements. Although they are still dependent on the distribution of surface heterogeneity, the flow rate-modified streaming effects are demonstrated to provide more consistent results with the traditional linear assumption than do the traditional ones, especially apparent in small microchannels.",

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doi = "10.1007/s10404-008-0309-1",

language = "English (US)",

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TY - JOUR

T1 - Flow rate-modified streaming effects in heterogeneous microchannels

AU - Zhu, Junjie

AU - Davidson, Christian

AU - Xuan, Xiangchun

N1 - Funding Information: Acknowledgments Financial support from Clemson University through a start-up package and a Research Investment Initiative Fund to X.X. is gratefully acknowledged.

PY - 2008

Y1 - 2008

N2 - A general model based on the Onsager reciprocal relations is developed to study the streaming potential and streaming current in heterogeneous microchannels. The surface heterogeneities may be symmetrically or asymmetrically distributed parallel or perpendicular to the flow axis. Both streaming effects are modified by the flow rate through the heterogeneous channel, to eliminate the possible influence of electrokinetic flow on the streaming potential and streaming current measurements. Although they are still dependent on the distribution of surface heterogeneity, the flow rate-modified streaming effects are demonstrated to provide more consistent results with the traditional linear assumption than do the traditional ones, especially apparent in small microchannels.

AB - A general model based on the Onsager reciprocal relations is developed to study the streaming potential and streaming current in heterogeneous microchannels. The surface heterogeneities may be symmetrically or asymmetrically distributed parallel or perpendicular to the flow axis. Both streaming effects are modified by the flow rate through the heterogeneous channel, to eliminate the possible influence of electrokinetic flow on the streaming potential and streaming current measurements. Although they are still dependent on the distribution of surface heterogeneity, the flow rate-modified streaming effects are demonstrated to provide more consistent results with the traditional linear assumption than do the traditional ones, especially apparent in small microchannels.

KW - Flow rate

KW - Heterogeneous microchannel

KW - Onsager reciprocal relations

KW - Streaming current

KW - Streaming potential

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JO - Microfluidics and Nanofluidics

JF - Microfluidics and Nanofluidics

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ER -

Flow rate-modified streaming effects in heterogeneous microchannels

Abstract

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