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DS: Fachverband Dünne Schichten
DS 19: Organic Interfaces (SYSA 6)
DS 19.10: Talk
Wednesday, February 27, 2008, 17:00–17:15, H 2013
Manipulation and Imaging of Aromatic Organic Molecules with Atomically Sharp Tips: The Last Atom Matters — Nicolae Atodiresei1, Vasile Caciuc2, Hendrik Hölscher2, and •Stefan Blügel1 — 1Institut für Festkörperforschung, Forschungszentrum Jülich, 52425 Jülich, Germany — 2Center for NanoTechnology (CeNTech), University of Münster, Heisenbergstr. 11, 48149 Münster, Germany
The manipulation and imaging of organic molecules is of high interest for the development of nanoelectronic devices. Based on ab initio calculations we simulated how an aromatic organic molecule like benzene adsorbed on a Cu(110) surface can be imaged and mechanically manipulated in non-contact atomic force microscopy using two types of atomically sharp tips. A clean Silicon tip pushes the Benzene molecule from one adsorption site to another and can therefore be used for lateral manipulation processes. On the other hand, a Copper terminated tip binds to the benzene molecule lifting it from the Cu surface, thus leading to a vertical manipulation of this molecule.