Berlin 2015 – scientific programme
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O: Fachverband Oberflächenphysik
O 15: Scanning Probe Techniques: STM/AFM
O 15.4: Talk
Monday, March 16, 2015, 15:45–16:00, MA 043
3D visual feedback during molecular manipulation — •Philipp Leinen1,2, Matthew F. B. Green1,2, Taner Esat1,2, Christian Wagner1,2, F. Stefan Tautz1,2, and Ruslan Temirov1,2 — 1Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich, Germany — 2JARA-Fundamentals of Future Information Technology
The scanning probe microscope is the tool of choice for the manipulation of single molecules on surfaces. With increased molecular complexity the number of degrees of freedom of such systems increases likewise. The respective high-dimensional potential energy surfaces call for the use of customized tip-trajectories for successful manipulation. Here, we present an intuitive approach to the task of SPM-based manipulation of large organic molecules. In brief, we connect a motion tracking and a 3D visualization device to a low-temperature non-contact atomic force microscope / scanning tunneling microscope (nc-AFM/STM). As a proof of principle application we demonstrate the controlled removal of single molecules from a monolayer of 3,4,9,10-perylene-tetracarboxylic-dianhydride (PTCDA). The mutual hydrogen bonds in such a layer can only be broken if a specific tip-trajectory is used [1]. The motion tracker allows to find such a trajectory within minutes in a trial and error approach. Using immersive 3D glasses we provide the experimenter with a visualization of the current as well as previous tip trajectories and thus allow a systematic search by selective variation.
[1] M. F. B. Green, T. Esat, C. Wagner, P. Leinen, A. Grötsch, F. S. Tautz, and R. Temirov, Beilstein J. Nanotechnol. 5, 1926 (2014).