Beilstein J. Nanotechnol.2014,5, 98–104, doi:10.3762/bjnano.5.9
both cases. This result demonstrates the capability of 3D force spectroscopy to detect even small effects in the electronic properties of organic adsorbates.
Keywords: atomic force microscopy; organic molecules; three-dimensional (3D) forcespectroscopy; Introduction
Perylene-3,4,9,10-tetracarboxylic
-resolution three-dimensional (3D) forcespectroscopy [10] to investigate the complete force field quantitatively, while starting at large tip–sample distances with no force interactions down to the regime of repulsive forces.
Experimental
The experiments have been performed with a commercial low-temperature
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Figure 1:
(a) STM topography scan (V = 0.2 V, I = 0.3 nA) of PTCDA on Ag(111). The two molecule orientations ...