Atomic force microscopy of C60/C70 single-crystal fullerenes under ethanol |
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| Authors: | P. Dietz P. Hansma K. Fostiropoulos W. Krätschmer |
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| Affiliation: | (1) Department of Physics, University of California, 93106 Santa Barbara, CA, USA;(2) Max-Planck-Institut für Kernphysik, P.O. Box 103980, W-6900 Heidelberg, Germany;(3) Present address: Institut für Medizinische Physik, Universität Münster, W-4400 Münster, Germany |
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| Abstract: | C60/C70 crystal surfaces were imaged by atomic force microscopy under ethanol with resolution of single molecules. Spherical and elongated elliptical fullerenes can be distinguished corresponding most likely with C60, respectively C70. Determination of the maximum diameter for a large number of molecules confirms the presence of two species of fullerenes, one with 9.4 Å, the other with 11.2 Å. The measured ratio C60:C70 is 81:19 which resembles the spectroscopical data. The molecules are arranged either in hexagonal (hcp) or cubic (fcc) packing, in some areas the two arrangements alternate within a few nm. Elongated fullerenes apparently prefer the hexagonal packing. |
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| Keywords: | 61.16.Di 68.35.Bs |
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