Molecular dynamics study of the initial stages of catalyzed single-wall carbon nanotubes growth: force field development
Abstract
Effective force fields for Ni-C interactions developed by Yamaguchi and Maruyama for the formation of metallofullerenes are modified to simulate the catalyzed growth of single-wall carbon nanotubes on Nin clusters with n >20, and the reactive empirical bond order Brenner potential for C-C interactions is also revised to include the effect of the metal atoms on such interactions.
Force field parameters for carbon-metal interactions obtained from DFT calculations in small clusters.
Keywords
Molecular dynamics Reactive force field Density functional theory Carbon nanotubes Catalytic growthNotes
Acknowledgements
Financial support from the National Science Foundation (NER/CTS-04003651) is gratefully acknowledged. This research used resources of the National Energy Research Scientific Computing Center, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC03–76SF00098. Supercomputer time granted by the DoD Major Shared Resource Center (ARL MSRC) is gratefully acknowledged.
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