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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 11: Poster: New Instruments and Methods

CPP 11.4: Poster

Monday, March 14, 2011, 17:30–19:30, P2

Characterization of functionalized graphene — •Michael Enzelberger¹, Jan Englert², Viatcheslav Dremov¹, Frank Hauke², Andreas Hirsch², and Paul Müller¹ — ¹Department of Physics and Interdisciplinary Center for Molecular Materials (ICMM), Universität Erlangen-Nürnberg, Germany — ²Department of Chemistry and Pharmacy and Institute of Advanced Materials and Processes (ZMP), Universität Erlangen-Nürnberg, Germany

Covalent functionalization of graphene is a challenging task. A possible method for characterizing the reaction product is Raman spectroscopy. However its lateral resolution is limited to about 500nm. In this talk we present our scanning probe approach to this problem. Using Kelvin probe microscopy and AFM point contact spectroscopy under ambient conditions we analyzed local work function, adhesion and Young's modulus with a lateral resolution of 30 - 50 nm. We were able to correlate the spatially integrated averages of these results with the Raman spectroscopy data.