Controlled Growth-Reversal of Catalytic Carbon Nanotubes under Electron-Beam Irradiation | Zendy

Vlad Stolojan | Zendy; Yann Tison | Zendy; Guan Yow Chen | Zendy; S. Ravi P. Silva | Zendy

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Controlled Growth-Reversal of Catalytic Carbon Nanotubes under Electron-Beam Irradiation

Author(s) -

Vlad Stolojan,

Yann Tison,

Guan Yow Chen,

S. Ravi P. Silva

Publication year - 2006

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/nl060709p

Subject(s) - carbon nanotube , catalysis , graphene , materials science , irradiation , transmission electron microscopy , nanotechnology , nanotube , chemical engineering , low energy electron microscopy , electron microscope , chemistry , optics , organic chemistry , physics , nuclear physics , engineering

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.

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