Manipulation of organic “needles” using an STM operated under SEM control |
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Authors: | K Hänel A Birkner S Müllegger A Winkler Ch Wöll |
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Institution: | Physical Chemistry I, Ruhr-University Bochum, Universitätstraße 150, 44801 Bochum, Germany Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria |
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Abstract: | Nano-sized P4P (para-quaterphenylene) organic crystallites grown on a gold substrate were removed and redeposited using the tip of an STM. The controlled lift-off of the needle-shaped crystallites was imaged by a simultaneously operated SEM. The forces exerted by the metal STM tip on the nano-crystal during this nano-manipulation process could be determined by monitoring the deflection of the STM tip. After the lift-off process the former contact area was imaged using the STM. These STM micrographs clearly demonstrate that the region between the needles is covered by a P4P layer with a thickness of at least 3 nm. |
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