Electro-responsive asymmetric nanopores in polyimide with stable ion-current signal |
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Authors: | Z Siwy D Dobrev R Neumann C Trautmann K Voss |
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Institution: | (1) Gesellschaft für Schwerionenforschung (GSI), Planckstr. 1, 64291 Darmstadt, Germany, DE;(2) Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland, PL |
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Abstract: | For the preparation of a single asymmetrically shaped nanopore in a polyimide membrane, Kapton foils were irradiated with
single heavy ions and subsequently etched from one side in sodium hypochlorite (NaOCl). The other side of the membrane was
protected from etching by a stopping medium containing a reducing agent for hypochlorite ions (OCl-). The resulting conical nanopore rectified ion current and exhibited a stable ion-current flow.
Received: 23 May 2002 / Accepted: 2 September 2002 / Published online: 15 January 2003
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ID="*"Corresponding author. Fax: +49-6159/712-179, E-mail: Z.Siwy@gsi.de |
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Keywords: | PACS: 81 16 -c 81 07 De 61 82 -d 05 60 -k |
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