Regensburg 2010 – scientific programme

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O: Fachverband Oberflächenphysik

O 66: Nanotribology I

O 66.6: Talk

Thursday, March 25, 2010, 11:45–12:00, H36

Friction on Graphene/SiC(0001) — •Christian Held and Roland Bennewitz — INM-Leibniz Institute for New Materials, 66123 Saarbrücken, Germany

Layers of graphene are grown on SiC(0001) samples by means of thermal decomposition in ultra-high vacuum [1]. The resulting structure consists of atomically flat terraces of SiC with a width of tens on nanometer, covered with single and bilayer patches of graphene. Single and bilayer coverage can be identified by Kelvin force microscopy. Strong friction contrast is observed across the surface structure when measured in situ by means of friction force microscopy. Friction on the SiC substrate is greatly reduced even by a single layer of graphene.

[1] K. V. Emtsev et al. , Nat. Mater. 2009, 8, 203.v