Continuous flow microfluidic demixing of electrolytes by induced charge electrokinetics in structured electrode arrays

Research output: Contribution to journalArticleAcademicpeer-review

46 Citations (Scopus)

Abstract

A continuous flow microfluidic demixing process is realized. It utilizes high external electrical fields that are applied over electrically floating noble metal electrodes in an otherwise straight microchannel. The process converts axial electrical potential gradients into lateral molecular selective transport via a structure oriented ensemble of numerous electrodes. While the individual electrodes locally modify the electrolyte distribution by nonlinear electrokinetic effects and concentration polarization, the directed orientation of the electrode array combines the individual polarization zones to a dedicated molecular enrichment against the generated concentration gradient. A homogeneously concentrated electrolyte can be separated into arbitrarily shaped laminae of increased and depleted concentration by the presented microfluidic demixer.
Original languageUndefined
Article number10.1021/ac051615n
Pages (from-to)1425-1434
Number of pages10
JournalAnalytical chemistry
Volume78
Issue number5
DOIs
Publication statusPublished - 1 Mar 2006

Keywords

  • EWI-8360
  • IR-63735
  • METIS-231960
  • BIOS-Micro/nanofluidics

Cite this

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title = "Continuous flow microfluidic demixing of electrolytes by induced charge electrokinetics in structured electrode arrays",
abstract = "A continuous flow microfluidic demixing process is realized. It utilizes high external electrical fields that are applied over electrically floating noble metal electrodes in an otherwise straight microchannel. The process converts axial electrical potential gradients into lateral molecular selective transport via a structure oriented ensemble of numerous electrodes. While the individual electrodes locally modify the electrolyte distribution by nonlinear electrokinetic effects and concentration polarization, the directed orientation of the electrode array combines the individual polarization zones to a dedicated molecular enrichment against the generated concentration gradient. A homogeneously concentrated electrolyte can be separated into arbitrarily shaped laminae of increased and depleted concentration by the presented microfluidic demixer.",
keywords = "EWI-8360, IR-63735, METIS-231960, BIOS-Micro/nanofluidics",
author = "F.C. Leinweber and Eijkel, {Jan C.T.} and Bomer, {Johan G.} and {van den Berg}, Albert",
year = "2006",
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Continuous flow microfluidic demixing of electrolytes by induced charge electrokinetics in structured electrode arrays. / Leinweber, F.C.; Eijkel, Jan C.T.; Bomer, Johan G.; van den Berg, Albert.

In: Analytical chemistry, Vol. 78, No. 5, 10.1021/ac051615n, 01.03.2006, p. 1425-1434.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Continuous flow microfluidic demixing of electrolytes by induced charge electrokinetics in structured electrode arrays

AU - Leinweber, F.C.

AU - Eijkel, Jan C.T.

AU - Bomer, Johan G.

AU - van den Berg, Albert

PY - 2006/3/1

Y1 - 2006/3/1

N2 - A continuous flow microfluidic demixing process is realized. It utilizes high external electrical fields that are applied over electrically floating noble metal electrodes in an otherwise straight microchannel. The process converts axial electrical potential gradients into lateral molecular selective transport via a structure oriented ensemble of numerous electrodes. While the individual electrodes locally modify the electrolyte distribution by nonlinear electrokinetic effects and concentration polarization, the directed orientation of the electrode array combines the individual polarization zones to a dedicated molecular enrichment against the generated concentration gradient. A homogeneously concentrated electrolyte can be separated into arbitrarily shaped laminae of increased and depleted concentration by the presented microfluidic demixer.

AB - A continuous flow microfluidic demixing process is realized. It utilizes high external electrical fields that are applied over electrically floating noble metal electrodes in an otherwise straight microchannel. The process converts axial electrical potential gradients into lateral molecular selective transport via a structure oriented ensemble of numerous electrodes. While the individual electrodes locally modify the electrolyte distribution by nonlinear electrokinetic effects and concentration polarization, the directed orientation of the electrode array combines the individual polarization zones to a dedicated molecular enrichment against the generated concentration gradient. A homogeneously concentrated electrolyte can be separated into arbitrarily shaped laminae of increased and depleted concentration by the presented microfluidic demixer.

KW - EWI-8360

KW - IR-63735

KW - METIS-231960

KW - BIOS-Micro/nanofluidics

U2 - 10.1021/ac051615n

DO - 10.1021/ac051615n

M3 - Article

VL - 78

SP - 1425

EP - 1434

JO - Analytical chemistry

JF - Analytical chemistry

SN - 0003-2700

IS - 5

M1 - 10.1021/ac051615n

ER -