Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 125, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2212402
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High-temperature quantum chemical molecular dynamics simulations have been performed on model systems of thin SiC crystal surfaces with two graphene sheets placed on top of either C or Si face. In agreement with experiment, we find that (a) the C-face-attached graphene layer warps readily to form small diameter, stable nanocaps, suitable for further perpendicular growth of nanotubes, (b) the Si-face-attached graphene sheet does not readily wrap and forms more volatile Si-graphene bonds, and (c) C face nanocaps appear to anneal to dome-shape structures with zigzag chirality. (c) 2006 American Institute of Physics.
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