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Nano Lett. 2006 Sep;6(9):1837-41.

Controlled growth-reversal of catalytic carbon nanotubes under electron-beam irradiation.

Author information

1
Nano-Electronics Centre, Advanced Technology Institute, University of Surrey, Guildford GU2 7XH, UK.

Abstract

The growth of carbon nanotubes from Ni catalysts is reversed and observed in real time in a transmission electron microscope, at room temperature. The Ni catalyst is found to be Ni3C and remains attached to the nanotube throughout the irradiation sequence, indicating that C most likely diffuses on the surface of the catalyst to form nanotubes. We calculate the energy barrier for saturating the Ni3C (2-13) surface with C to be 0.14 eV, thus providing a low-energy surface for the formation of graphene planes.

PMID:
16967987
DOI:
10.1021/nl060709p
[Indexed for MEDLINE]

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