Regensburg 2016 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 56: Nanostructures: Dots, Particles and Clusters

O 56.2: Vortrag

Mittwoch, 9. März 2016, 10:45–11:00, H4

Cluster mobility of supported size-selected clusters — •Amelie Porzelt, Fabian Knoller, Michael König, Yves Fukamori, Friedrich Esch, and Ueli Heiz — Technische Universität München, Chair of Physical Chemistry, Lichtenbergstr. 4, 85748 Garching, Germany

We present our studies on the ripening dynamics of individual size-selected clusters on a periodically wettable Moiré-graphene film on Rh(111). By imaging the cluster dispersion and by tracking the cluster diffusion, insight into the fundamental processes that govern the cluster diffusion can be gained - how do clusters start their diffusive motion, which path do they follow, how do they stop, and how does this behavior depend on their specific size? We present data on the diffusion of bare clusters and investigate changes induced by adsorbates such as CO, hydrogen or oxygen.