Nanofluidic diode generated by pH gradient inside track-etched conical nanopore

L. Wang; W. Guo; Y. B. Xie; X. W. Wang; J. M. Xue; Y. G. Wang

doi:10.1016/j.radmeas.2009.10.042

Nanofluidic diode generated by pH gradient inside track-etched conical nanopore

L. Wang, W. Guo, Y. B. Xie, X. W. Wang, J. M. Xue, Y. G. Wang

Peking University

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

42 Scopus citations

Abstract

A nanofluidic diode is produced with a track-etched single conical nanopore embedded in a polyethylene terephthalate (PET) film. It has a very strong current rectification behavior which depends on the surface charge densities and the solution salt concentration. We tried to control the current rectification properties by using asymmetric pH solutions on the two side of nanopore membrane, because this arrangement could adjust the surface charge density distribution inside the nanopore since it depends on the local pH value. This nanofluidic diode is analogous to a bipolar semiconductor diode which is sensitive to the solution pH values.

Original language	English
Pages (from-to)	1119-1122
Number of pages	4
Journal	Radiation Measurements
Volume	44
Issue number	9-10
DOIs	https://doi.org/10.1016/j.radmeas.2009.10.042
State	Published - Oct 2009
Externally published	Yes

Keywords

Asymmetric pH gradient
Distribution of surface charge
Rectification effect

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10.1016/j.radmeas.2009.10.042

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title = "Nanofluidic diode generated by pH gradient inside track-etched conical nanopore",

abstract = "A nanofluidic diode is produced with a track-etched single conical nanopore embedded in a polyethylene terephthalate (PET) film. It has a very strong current rectification behavior which depends on the surface charge densities and the solution salt concentration. We tried to control the current rectification properties by using asymmetric pH solutions on the two side of nanopore membrane, because this arrangement could adjust the surface charge density distribution inside the nanopore since it depends on the local pH value. This nanofluidic diode is analogous to a bipolar semiconductor diode which is sensitive to the solution pH values.",

keywords = "Asymmetric pH gradient, Distribution of surface charge, Rectification effect",

author = "L. Wang and W. Guo and Xie, {Y. B.} and Wang, {X. W.} and Xue, {J. M.} and Wang, {Y. G.}",

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AU - Wang, L.

AU - Guo, W.

AU - Xie, Y. B.

AU - Wang, X. W.

AU - Xue, J. M.

AU - Wang, Y. G.

PY - 2009/10

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N2 - A nanofluidic diode is produced with a track-etched single conical nanopore embedded in a polyethylene terephthalate (PET) film. It has a very strong current rectification behavior which depends on the surface charge densities and the solution salt concentration. We tried to control the current rectification properties by using asymmetric pH solutions on the two side of nanopore membrane, because this arrangement could adjust the surface charge density distribution inside the nanopore since it depends on the local pH value. This nanofluidic diode is analogous to a bipolar semiconductor diode which is sensitive to the solution pH values.

AB - A nanofluidic diode is produced with a track-etched single conical nanopore embedded in a polyethylene terephthalate (PET) film. It has a very strong current rectification behavior which depends on the surface charge densities and the solution salt concentration. We tried to control the current rectification properties by using asymmetric pH solutions on the two side of nanopore membrane, because this arrangement could adjust the surface charge density distribution inside the nanopore since it depends on the local pH value. This nanofluidic diode is analogous to a bipolar semiconductor diode which is sensitive to the solution pH values.

KW - Asymmetric pH gradient

KW - Distribution of surface charge

KW - Rectification effect

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SP - 1119

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JO - Radiation Measurements

JF - Radiation Measurements

IS - 9-10

ER -

Nanofluidic diode generated by pH gradient inside track-etched conical nanopore

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Keywords

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