Controlled production of aligned-nanotube bundles
Article Abstract:
Carbon nanotubes may behave as metallic, insulating or semiconducting wires, indicating their use in nanometre-scale engineering and electronics. Carbon-arc discharge techniques, catalytic pyrolysis of hydrocarbons and condensed-phase electrolysis are commonly used to generate nanotubes, but polyhedral particles are also formed. A method of producing aligned carbon nanotubes through pyrolysis of 2-amino-4, 6-dichloro-s-triazine over a thin patterned catalyst on a silica substrate by laser etching, is described.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Thinning and opening of carbon nanotubes by oxidation using carbon dioxide
Article Abstract:
The discovery and bulk synthesis of carbon nanotubes has attracted great interest, as they could possess useful mechanical and electronic properties which could be modified by introducing foreign materials into nanotubes. However, the potential usefulness of nanotubes is hampered because they are invariably capped at their ends. A method for thinning and opening of carbon nanotubes was thus developed. It involves heating in C02 gas to destroy the cap and to thin the end of the nanotube to a single layer.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1993
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Condensed-phase nanotubes
Article Abstract:
Multi-walled nanotubes can be prepared by passing an electric current between carbon electrodes in molten lithium chloride. Some of the nanotubes are very long and display evidence of encapsulated material. These nanotubes, which tend to form loops, consist of 5-20 concentric layers that collapse on prolonged irradiation in the electron beam thereby forming tube-like structures which are irregular and distorted.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1995
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