Journal ArticleDOI
Ion transport through asymmetric nanopores prepared by ion track etching
Zuzanna S. Siwy,Pavel Yu Apel,D. Dobrev,R. Neumann,Reimar Spohr,Christina Trautmann,K.-O. Voss +6 more
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TLDR
In this paper, the transport properties of single asymmetric nanopores in polyethylene terephthalate (PET) and polyimide (Kapton) membranes are investigated.Abstract:
Transport properties of single asymmetric nanopores in polyethylene terephthalate (PET) and polyimide (Kapton) membranes are investigated. The pores are produced by the track-etching technique based on irradiation of the polymer with heavy ions and subsequent chemical etching. Electrolytic conductivity measurements show that asymmetric pores in both polymeric materials rectify the ionic current. The PET and Kapton pores differ however significantly in their transient transport properties. The ion current through the PET nanopore fluctuates with the amplitudes reaching even 100% of the mean current, whereas nanopores in Kapton exhibit a stable current signal. We show that the transient properties of the pores depend on the chemical structure of the polymer as well as on the irradiation and etching procedures used in this work.read more
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References
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Journal ArticleDOI
Ion-beam sculpting at nanometre length scales
Jiali Li,Derek Stein,Ciaran J. McMullan,Daniel Branton,Michael J. Aziz,Jene Andrew Golovchenko +5 more
TL;DR: It is shown that ion-beam sculpting can be used to fashion an analogous solid-state device: a robust electronic detector consisting of a single nanopore in a Si3N4 membrane, capable of registering single DNA molecules in aqueous solution.
Journal ArticleDOI
Nuclear Tracks in Solids. Principles and Applications
TL;DR: An extensive discussion of particle tracks in solids, quantitative methods for particle identification from them, and applications of the techniques in a number of fields are presented in this paper, including geochronology, cosmic ray physics, meteoritic and lunar science, nuclear physics, chemical analysis, micro-chemical mapping, and radiation dosimetry.
Journal ArticleDOI
Nuclear Tracks in Solids (Principles and Applications)
TL;DR: In this paper, nuclear tracks in solids (Principles and Applications) nuclear technology: Vol. 30, No. 1, pp. 91-92, were discussed and discussed in detail.
Journal ArticleDOI
Diode-like single-ion track membrane prepared by electro-stopping
TL;DR: The prepn. of an asym. membrane in poly(ethylene terephthalate) (PET) is described, using a combination of chem. and electro-stopping as mentioned in this paper.