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Designability of Graphitic Cones

Published online by Cambridge University Press:  21 March 2011

M. M. J. Treacy  and
J. Kilian
M. M. J. Treacy
Affiliation:
NEC Research Institute, Inc. 4 Independence Way, Princeton, NJ 08540–6685, USA
J. Kilian
Affiliation:
NEC Research Institute, Inc. 4 Independence Way, Princeton, NJ 08540–6685, USA
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Abstract

We show that, with topologically flexible seeds which are allowed to explore different growth modes, graphitic cones are inherently more “designable” than flat graphitic disks. The designability of a structure is the number of seed topologies encoding that structure.

We illustrate designability with a simple model, where graphite grows onto Cn (5≤n≤30) ring seeds. For a wide range of ring sizes, cones are the most likely topological outcome. Results from the model agree well with data from special cone-rich carbon black samples.

The concept of designability allows entropy to be incorporated into the “pentagon road” model of the formation of curved graphitic structures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 675: Symposium W – Nanotubes, Fullerenes, Nanostructured and Disordered Carbon , 2001 , W2.6.1
Copyright
Copyright © Materials Research Society 2001

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