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17–19 Sept 2018
Fakultät für Maschinenwesen der Technischen Universität München
Europe/Berlin timezone

Interaction of highly charged ions with surfaces and 2D materials

19 Sept 2018, 09:45
30m
MW 2001 (Fakultät für Maschinenwesen)

MW 2001

Fakultät für Maschinenwesen

Keynote - Plenary (only invited!) Keynote/ Plenary/ Public lecture Keynote

Speaker

Prof. Friedrich Aumayr (TU Wien)

Description

The large amount of energy deposited by the neutralization of highly charged ions during their impact on solid surfaces leads to electronic excitations. Depending on the material's response to the ion impact, phenomena like sputtering and the formation of individual nanostructures at the surface can occur. To pinpoint the energy deposition and it's time dependence experimentally we recently used freestanding two-dimensional materials like graphene as a target. By adjusting the ions' kinetic energy the interaction time with the 2D-solid can be controlled. Spectroscopic measurements of the ions after transmission not only give insight into the mechanisms of a rapid charge exchange and deexcitation sequence but show that highly charged ions are well suited to investigate properties of 2D materials under extreme conditions on a femtosecond time scale.

Primary author

Prof. Friedrich Aumayr (TU Wien)

Presentation materials

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