Physics – Condensed Matter – Materials Science
Scientific paper
2000-07-14
Physics
Condensed Matter
Materials Science
4 pages, 2 PS figures
Scientific paper
The energetics of transformation of a planar fragment of a graphite monolayer into a spherical cluster is studied. The path considered is that a flat cluster rolls up into a segment of a spherical shell. The energy landscape of the process is presented. A simple model, formerly invented for calculating the carbon nanocluster formation energy, is used to evaluate the energies of intermediate states. Although the spherical-shell closed cluster has the lowest energy, curving of a plane fragment into a segment has an energy barrier. The barrier height goes to zero for clusters with the number of atoms greater than some $N_{\rm th}$, for which the cluster size is found analytically.
Rotkin Slava V.
Suris Robert A.
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