[Zurück]

F. Aumayr, R.A. Wilhelm, E. Gruber, R. Ritter, R. Heller, S. Fascko:
"Transmission of slow highly charged ions through graphene and ultrathin carbon nanomembranes";
in: "Transmission of slow highly charged ions through graphene and ultrathin carbon nanomembranes Les Arcs 1800, France March 22 - 28, 2015 (editors: F. Cheynis, S. Curiotto, F. Leroy, P. Müller)", Proc. Symposium on Surface Science 2015 (3S*15), 2015, S. 30 - 31.

The production of nanostructures by slow highly charged ions (HCIs) on surfaces has
been a hot topic in the last years [1]. We have recently discovered that the impact of
individual HCIs is able to create permanent nano-sized hillocks on the surface of a CaF2
single crystal [2]. The experimentally observed threshold of the projectile's potential energy
necessary for hillock formation could be successfully linked to a solid-liquid phase transition
(nano-melting) [1 - 3]. Meanwhile a variety of materials has been found, which is susceptible
to nano-structuring by the impact of slow HCI [1]. The nature, appearance and stability of the
created structures, however, depend heavily on the properties of the target material and the
involved interaction processes (determined by the potential and kinetic energy of the
projectiles) [3]. Not in all cases nano-hillocks are formed on the surface but also nano-craters
or -holes have been found, e.g. on KBr [4] or PMMA [5].