The importance of wall chemistry in Nanofluidics

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

ABSTRACT AND INTRODUCTION:
It is common knowledge that the surface charge in micro- and nanofluidic systems and hence the intensity of electrokinetic phenomena is a function of pH, ionic strength and type of solute. It is not often realized however that transient changes in surface charge will be accompanied by changes in the concentration of the surface-binding ions. Since the latter effect increases with increasing surface-to-volume ratio, it is especially relevant in nanofluidic systems. Ionic binding also limits the efficiency of voltage gating in so-called ionic transistors, causing changes in ionic concentration rather than changes in surface potential. In this contribution we present a conceptual model that accounts for ion binding.
Original languageEnglish
Title of host publicationThe 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010
EditorsSabeth Verpoorte, Helen Andersson-Svahn, Jenny Emnéus, Nicole Pamme
Place of PublicationSan Diego
PublisherChemical and Biological Micro Systems Society
Pages1403-1405
Number of pages3
ISBN (Print)978-0-9798064-3-8
Publication statusPublished - 6 Oct 2010
Event14th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2010, µTAS 2010 - Groningen, Netherlands
Duration: 3 Oct 20107 Oct 2010
Conference number: 14

Publication series

NameInternational Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]
PublisherChemical and Biological Microsystems Society
Volume2010
ISSN (Print)1556-5904

Conference

Conference14th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2010, µTAS 2010
Abbreviated titleMicroTAS
CountryNetherlands
CityGroningen
Period3/10/107/10/10

Fingerprint

Nanofluidics
Surface charge
Ions
Ionic strength
Microfluidics
Transistors
Electric potential

Keywords

  • Nanofluidics
  • Surface charge density
  • Surface potential
  • Voltage gating
  • Ionic transistor
  • ISFET
  • FlowFET

Cite this

Eijkel, J. C. T., & van den Berg, A. (2010). The importance of wall chemistry in Nanofluidics. In S. Verpoorte, H. Andersson-Svahn, J. Emnéus, & N. Pamme (Eds.), The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010 (pp. 1403-1405). (International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]; Vol. 2010). San Diego: Chemical and Biological Micro Systems Society.
Eijkel, Jan C.T. ; van den Berg, Albert. / The importance of wall chemistry in Nanofluidics. The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010. editor / Sabeth Verpoorte ; Helen Andersson-Svahn ; Jenny Emnéus ; Nicole Pamme. San Diego : Chemical and Biological Micro Systems Society, 2010. pp. 1403-1405 (International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]).
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Eijkel, JCT & van den Berg, A 2010, The importance of wall chemistry in Nanofluidics. in S Verpoorte, H Andersson-Svahn, J Emnéus & N Pamme (eds), The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010. International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings], vol. 2010, Chemical and Biological Micro Systems Society, San Diego, pp. 1403-1405, 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2010, µTAS 2010, Groningen, Netherlands, 3/10/10.

The importance of wall chemistry in Nanofluidics. / Eijkel, Jan C.T.; van den Berg, Albert.

The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010. ed. / Sabeth Verpoorte; Helen Andersson-Svahn; Jenny Emnéus; Nicole Pamme. San Diego : Chemical and Biological Micro Systems Society, 2010. p. 1403-1405 (International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]; Vol. 2010).

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - The importance of wall chemistry in Nanofluidics

AU - Eijkel, Jan C.T.

AU - van den Berg, Albert

PY - 2010/10/6

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N2 - ABSTRACT AND INTRODUCTION:It is common knowledge that the surface charge in micro- and nanofluidic systems and hence the intensity of electrokinetic phenomena is a function of pH, ionic strength and type of solute. It is not often realized however that transient changes in surface charge will be accompanied by changes in the concentration of the surface-binding ions. Since the latter effect increases with increasing surface-to-volume ratio, it is especially relevant in nanofluidic systems. Ionic binding also limits the efficiency of voltage gating in so-called ionic transistors, causing changes in ionic concentration rather than changes in surface potential. In this contribution we present a conceptual model that accounts for ion binding.

AB - ABSTRACT AND INTRODUCTION:It is common knowledge that the surface charge in micro- and nanofluidic systems and hence the intensity of electrokinetic phenomena is a function of pH, ionic strength and type of solute. It is not often realized however that transient changes in surface charge will be accompanied by changes in the concentration of the surface-binding ions. Since the latter effect increases with increasing surface-to-volume ratio, it is especially relevant in nanofluidic systems. Ionic binding also limits the efficiency of voltage gating in so-called ionic transistors, causing changes in ionic concentration rather than changes in surface potential. In this contribution we present a conceptual model that accounts for ion binding.

KW - Nanofluidics

KW - Surface charge density

KW - Surface potential

KW - Voltage gating

KW - Ionic transistor

KW - ISFET

KW - FlowFET

M3 - Conference contribution

SN - 978-0-9798064-3-8

T3 - International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]

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BT - The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010

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Eijkel JCT, van den Berg A. The importance of wall chemistry in Nanofluidics. In Verpoorte S, Andersson-Svahn H, Emnéus J, Pamme N, editors, The 14th International Conference on Miniaturized Systems for Chemistry and Life Sciences, µTAS 2010. San Diego: Chemical and Biological Micro Systems Society. 2010. p. 1403-1405. (International Conference on Miniaterized Systems for Chemistry and Life Sciences : [proceedings]).