Lower limit for single-wall carbon nanotube diameters from hydrocarbons and fullerenes |
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Authors: | H Kanzow P Bernier A Ding |
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Institution: | GDPC, UMR 5581, Université Montpellier II, CC 026, 34095 Montpellier Cedex 05, France, FR Technische Universit?t Berlin, Optisches Institut, Strasse des 17 Juni 135, 10623 Berlin, Germany, DE
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Abstract: | A theoretical model for the growth of single-wall carbon nanotubes produced by metal-catalyzed decomposition of hydrocarbons
and fullerenes is presented. The growth process is treated as a thermodynamic equilibrium between carbon in the gas phase
and carbon in the nanotube. The minimum possible nanotube diameters based on several published experimental conditions are
calculated by combining the free energy of the reaction with an equation derived from elastic theory. The model predicts the
possibility of generating nanotubes with extremely small diameters that are smaller than in the corresponding experiments.
Received: 18 July 2001 / Accepted: 19 November 2001 / Published online: 4 March 2002 |
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Keywords: | PACS: 81 10 Aj 81 05 Tp |
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