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Ionic Transport through Chemically Functionalized Hydrogen Peroxide-Sensitive Asymmetric Nanopores

Ali, Mubarak and Ahmed, Ishtiaq and Nasir, Saima and Ramirez, Patricio and Niemeyer, Christof M. and Mafe, Salvador and Ensinger, Wolfgang (2015):
Ionic Transport through Chemically Functionalized Hydrogen Peroxide-Sensitive Asymmetric Nanopores.
In: ACS Applied Materials & Interfaces, 7 (35), pp. 19541-19545, ISSN 1944-8244,
[Online-Edition: http://dx.doi.org/10.1021/acsami.5b06015],
[Article]

Abstract

We describe the fabrication of a chemical-sensitive nanofluidic device based on asymmetric nanopores whose transport characteristics can be modulated upon exposure to hydrogen peroxide (H2O2). We show experimentally and theoretically that the current-voltage curves provide a suitable method to monitor the H2O2-mediated change in pore surface characteristics from the electronic readouts. We demonstrate also that the single pore characteristics can be scaled to the case of a multipore membrane whose electric outputs can be readily controlled. Because H2O2 is an agent significant for medical diagnostics, the results should be useful for sensing nanofluidic devices.

Item Type: Article
Erschienen: 2015
Creators: Ali, Mubarak and Ahmed, Ishtiaq and Nasir, Saima and Ramirez, Patricio and Niemeyer, Christof M. and Mafe, Salvador and Ensinger, Wolfgang
Title: Ionic Transport through Chemically Functionalized Hydrogen Peroxide-Sensitive Asymmetric Nanopores
Language: English
Abstract:

We describe the fabrication of a chemical-sensitive nanofluidic device based on asymmetric nanopores whose transport characteristics can be modulated upon exposure to hydrogen peroxide (H2O2). We show experimentally and theoretically that the current-voltage curves provide a suitable method to monitor the H2O2-mediated change in pore surface characteristics from the electronic readouts. We demonstrate also that the single pore characteristics can be scaled to the case of a multipore membrane whose electric outputs can be readily controlled. Because H2O2 is an agent significant for medical diagnostics, the results should be useful for sensing nanofluidic devices.

Journal or Publication Title: ACS Applied Materials & Interfaces
Volume: 7
Number: 35
Divisions: 11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences
Date Deposited: 25 Sep 2015 13:49
Official URL: http://dx.doi.org/10.1021/acsami.5b06015
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