Berlin 2008 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 18: Poster Session I - MA 141/144 (Atomic Wires; Size-Selected Clusters; Nanostructures; Metal Substrates: Clean Surfaces+Adsorption of Organic / Bio Molecules+Solid-Liquid Interfaces+Adsorption of O and/or H; Surface or Interface Magnetism; Oxides and Insulators: Clean Surfaces)
O 18.25: Poster
Montag, 25. Februar 2008, 18:30–19:30, Poster F
Single molecule manipulations: PTCDA on Ag(111) — •Olga Neucheva1, Ruslan Temirov1, Adam Lassise2, Sergey Soubatch1, and Stefan Tautz1 — 1Forschungszentrum Jülich, Jülich, Germany — 2Jacobs University, Bremen, Germany
Manipulations of atoms and molecules with the low temperature scanning tunneling microscope open new opportunities for creating nanodevices. The size of molecules and type of their interaction with the substrate play an important role in manipulation process. For PTCDA molecules chemisorbed on Ag(111) surface, we developed a protocol of controllable and reproducible manipulation which includes a creation of stable contact between a molecule and STM-tip, tearing it from the substrate and transporting to a chosen position, and finally locating it on the surface. The reproducibility of these stages is controlled by measuring the I(t) spectra. Using this protocol, we formed different types of molecular corrals and chains in order to modify the Ag(111) surface state. Performed experiments allow us to study substrate-molecule interaction in more details.