Production of multi-, oligo- and single-pore membranes using a continuous ion beam

0454061 - ÚJF 2016 RIV NL eng J - Journal Article
Apel, P. Yu. - Ivanov, O. - Lizunov, N. E. - Mamonova, T. I. - Nechaev, A. N. - Olejniczak, K. - Vacík, Jiří - Dmitriev, S. N.
Production of multi-, oligo- and single-pore membranes using a continuous ion beam.
Nuclear Instruments & Methods in Physics Research Section B. Roč. 365, DEC (2015), s. 641-645. ISSN 0168-583X. E-ISSN 1872-9584
R&D Projects: GA MŠMT LG14004
Institutional support: RVO:61389005
Keywords : ion beam * irradiation * ion track * etching * single nanopore
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.389, year: 2015

The present report describes a procedure that allowed for the production of multi-, oligo- and single-pore membranes using a continuous ion beam from an IC-100 cyclotron. The beam was scanned over a set of small diaphragms, from 17 to similar to 1000 mu m in diameter. Ions passed through the apertures and impinged two sandwiched polymer foils, with the total thickness close to the ion range in the polymer. The foils were pulled across the ion beam at a constant speed. The ratio between the transport speed and the scanning frequency determined the distance between irradiation spots. The beam intensity and the aperture diameters were adjusted such that either several, one or no ions passed through the diaphragms during one half-period of scanning. After irradiation, the lower foil was separated from the upper foil and was etched to obtain pores 6-8 mu m in diameter. The pores were found using a color chemical reaction between two reagents placed on opposite sides of the foil. The located pores were further confirmed using SEM and optical microscopy. The numbers of tracks in the irradiation spots were consistent with the Poisson statistics. Samples with single or few tracks obtained in this way were employed to study fine phenomena in ion track nanopores.
Permanent Link: http://hdl.handle.net/11104/0254753