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Atomic-Scale Mechanical Properties of Orientated C(60) Molecules Revealed by Noncontact Atomic Force Microscopy
Journal
ACS nano
Volume
5
Number
8
Pages / Article-Number
6349-6354
Keywords
noncontact atomic force microscopy, scanning tunnelling microscopy, three-dimensional dynamic force spectroscopy, fullerene C-60, high-resolution imaging, local force variation
Abstract
In this work, the mechanical properties of C(60) molecules adsorbed on Cu(111) are measured by tuning-fork-based noncontact atomic force microscopy (nc-AFM) and spectroscopy at cryogenic conditions. Site-specific tip-sample force variations are detected above the buckyball structure. Moreover, high-resolution Images obtained by nc-AFM show the chemical structure of this. molecule and describes unambiguously its orientations on the surface.