Dresden 2011 – scientific programme

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DS: Fachverband Dünne Schichten

DS 49: Ion Interactions with Nano Scale Materials IV (Focused Session -- Organisers: Diesing, Facsko)

DS 49.1: Topical Talk

Thursday, March 17, 2011, 17:45–18:15, GER 37

Nano-scale surface modifications produced by highly charged ion impact — •Friedrich Aumayr — TU Wien, Inst. für Angewandte Physik

The large amount of potential energy stored in highly charged ions (HCI) is liberated during the interaction with a solid surface within a few femtoseconds into a nanometer size volume close to the surface. It is therefore not astonishing that severe surface modifications with nanometer dimensions have been demonstrated for the impact of individual slow HCI on various surfaces, similar to the impact of individual swift heavy ions. Depending on the type of material, nano-hillocks, nano-pits or caldera-like nano-craters have been found at the ion impact site.

Present research tries to control the production of material modifications on surfaces and thin films (including 2D carbon-nanosheets and graphene) with well-defined size in the nanometer region by a variation of the HCI potential energy. The current status of this rather new field will be presented.