Dresden 2014 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 61: Nanostructures at Surfaces III
O 61.12: Vortrag
Mittwoch, 2. April 2014, 18:45–19:00, WIL B321
Observation of 4 nm Pitch Stripe Domains Formed by Exposing Graphene to Ambient Air — •Daniel Sebastian Wastl1, Florian Speck2, Elisabeth Wutscher1, Markus Ostler3, Thomas Seyller2,3, and Franz Josef Giessibl1 — 1Institut für experimentelle und angewandte Physik, Universität Regensburg, 93053 Regensburg, Germany — 2Lehrstuhl für Technische Physik, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany — 3Institut für Physik, Technische Universität Chemnitz, 09126 Chemnitz, Germany
We study epitaxial graphene on the 6H-SiC(0001) surface under ambient conditions using frequency-modulation atomic force microscopy. We observe large terraces with a self assembled stripe structure within a highly adsorbate covered surface on top of the graphene[1]. To identify the origin of the structure, we compare the experimental data on graphene with calculations and experiments on graphite that predict the formation of a solid-gas monolayer in the solid-liquid interface of hydrophobic surfaces.
[1] Wastl et al. ACS Nano, 2013, doi: 10.1021/nn403988y