| Issue |
Europhys. Lett.
Volume 60, Number 3, November I 2002
|
|
|---|---|---|
| Page(s) | 349 - 355 | |
| Section | General | |
| DOI | https://doi.org/10.1209/epl/i2002-00271-3 | |
| Published online | 01 October 2002 | |
Rectification and voltage gating of ion currents in a nanofabricated pore
1
Silesian University of Technology - Strzody 9,
44-100 Gliwice, Poland
2
Gesellschaft für Schwerionenforschung (GSI)
Planckstr.1, D-64291 Darmstadt, Germany
3
Imperial College of Science, Technology and Medicine,
Hammersmith Campus Du Cane Road, London W12 0NN, UK
4
Flerov Laboratory of Nuclear Reactions, JINR -
141980 Dubna, Russia
Corresponding author: Z.Siwy@gsi.de
Received:
27
May
2002
Accepted:
19
August
2002
We have fabricated a voltage sensor in the form of a conically shaped nanopore in a polyethylene terephthalate (PET) foil. The pore is produced by irradiation of the foil with a single heavy ion and subsequent etching in alkaline solution. The resulting pore functions as a voltage gate and rectifies ion current due to changes of its diameter in an electrical field. Ion currents through the pore show voltage-dependent fluctuations, whose kinetics are similar as in voltage-gated biological ion channels and pores.
PACS: 05.60.-k – Transport processes / 81.16.-c – Methods of nanofabrication and processing / 81.07.De – Nanotubes
© EDP Sciences, 2002
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