Regensburg 2010 – scientific programme

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O: Fachverband Oberflächenphysik

O 60: Poster Session III (Methods: Atomic and electronic structure; Methods: electronic structure theory; Methods: Molecular simulations and statistical mechanics; Methods: Sanning probe techniques; Methods: other (experimental); Methods: other (theory) )

O 60.16: Poster

Wednesday, March 24, 2010, 17:45–20:30, Poster B2

Mechanical Behaviour of Graphenes on a Solid Surface — •Stefan Eilers and Jürgen P. Rabe — Department of Physics, Humboldt-Universität zu Berlin, Germany

Graphene is a promising candidate for future generation electronic devices. Structuring and, more general, manipulation of graphenes are needed for the development of possible applications. Scanning force microscope (SFM) techniques are promising for the investigation of single or multilayer graphenes, because of their thinness, flexibility and flatness. Here we demonstrate the manipulation of graphene on a SiO2 surface. Contrary to the cutting of single polymers with an SFM tip, which always results in only one cut, cutting graphenes results in two cuts. Therefore nanogaps and nanoribbons can be readily produced. This effect is attributed to the one- and two-dimensionality of polymers and graphene, respectively. Simple explanations are provided to understand the behaviour. It is demonstrated inhowfar basic models for describing bending and breaking of macroscopic objects are applicable also for these nanoscopic systems.