Berlin 2015 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 35: Nanostructures at Surfaces

O 35.8: Poster

Dienstag, 17. März 2015, 18:15–21:00, Poster A

3d metal nanoparticles deposited on graphene — •Wolfram Gilbert, Torsten Veltum, Hendrik Bettermann, and Mathias Getzlaff — Institute of Applied Physics, University of Düsseldorf

In the past few years graphene gained the attention of scientists due to its unique mechanical and electrical properties. In addition to this, fabrication and deposition of nanoparticles on a substrate is of great interest for studies, e.g. as model catalysts. In this contribution we compare the properties of nanoparticles deposited on graphene with those on a 3d metal thin film.

A thin metallic film is epitaxially grown by electron beam evaporation on a W(110) single crystal under ultra-high vacuum conditions. To achieve a structurally ordered monolayer graphene on the ferromagnetic substrate we use chemical vapour deposition with propylene. The structure of this system is characterized in-situ by means of scanning tunnelling microscopy (STM) and low energy electron diffraction (LEED).

The nanoparticles are produced by a continuously working arc cluster ion source (ACIS), mass-selected by an electrostatic quadrupole (Δm/m=10%) and subsequently deposited on the target surface under soft landing conditions. The structural analysis of the nanoparticles is carried out by STM.