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Funnel-type etched ion tracks in polymers
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SYSNO ASEP 0346530 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Funnel-type etched ion tracks in polymers Author(s) Fink, Dietmar (UJF-V) ORCID, SAI
Vacík, Jiří (UJF-V) RID, ORCID, SAI
Hnatowicz, Vladimír (UJF-V) RID
Munoz, G. H. (MX)
Alfonta, L. (IL)
Klinkovich, I. (IL)Source Title Radiation Effects and Defects in Solids. - : Taylor & Francis - ISSN 1042-0150
Roč. 165, č. 5 (2010), s. 343-361Number of pages 19 s. Language eng - English Country GB - United Kingdom Keywords tracks ; polymers ; etching Subject RIV JJ - Other Materials R&D Projects KAN400480701 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000277176500002 DOI 10.1080/10420151003743020 Annotation It is shown that conical track etching is a much more complicated process than generally assumed. The choice of the corresponding parameters (i.e. the ratios of concentrations and diffusion coefficients of both etchant (e.g. NaOH) and stopping solutions (e.g. HCl) and the etching temperature) determines the ratio of polymer dissolution to etchant penetration. The latter value controls the counterplay of diffusion, etching, ionic conductivity, field emission and capacitive effects, which is decisive for both the final track shapes and their electronic properties. The stages of track evolution during etching under different conditions are outlined in detail. Both transparent conical nanopores and "funnel-type" tracks can be obtained, the latter consisting of a shorter cone and a residual latent track. Depending on the internal structure of that latent track segment, such funnel-type tracks either allow smooth transmission of the rectified currents or they emit unipolar current spikes. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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