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29 April 2003 Exploring the carbon nanocosmos: doped nanotubes, networks, and other novel forms of carbon
Mauricio Terrones, Pulickel M. Ajayan, Florian Banhart, X. Blase, David L Carroll, Jean-Christophe Charlier, Richard Czerw, Nicole Grobert, R. Kamalakaran, Martine Mayne, Marisol Reyes-Reyes, Manfred Ruhle, T. Seeger, Humberto Terrones
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Proceedings Volume 5118, Nanotechnology; (2003) https://doi.org/10.1117/12.499003
Event: Microtechnologies for the New Millennium 2003, 2003, Maspalomas, Gran Canaria, Canary Islands, Spain
Abstract
Particular attention will be focused on efficient self-assembly pyrolytic routes to large arrays (<2.5 cm2) of aligned C, CNx and BxCyNz nanotubes (15-80 nm od and < 100 microns length). In general, these 'hollow' fibres do not easily break upon bending and may behave as shock absorbing fillers in the fabrication of robust composites. The electronic and field emission properties, as well as the density of states (DOS) of CNx and BCx nanotubes using scanning tunneling spectroscopy (STS) will be presented. We further demonstrate that the presence of N and B are responsible for introducing donor and acceptor states near the Fermi Level. Novel applications of these doped materials will also be discussed. Finally, it will be shown that high electron irradiation during annealing at 700 - 800 °C, is capable of coalescing and joining single-walled nanotubes (SWNTs). Vacancies induce the merge via a zipper-like mechanism, imposing a continuous reorganization of atoms on individual tube lattices within the adjacent tubes. Other topological defects induce the polymerization of tubes and creation of 'Y', 'T' and 'X' nanotube junctions. The latter results pave the way to the fabrication of nanotube contacts, nanocircuits and strong 3D composites using irradiation doses under annealing conditions.
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Mauricio Terrones, Pulickel M. Ajayan, Florian Banhart, X. Blase, David L Carroll, Jean-Christophe Charlier, Richard Czerw, Nicole Grobert, R. Kamalakaran, Martine Mayne, Marisol Reyes-Reyes, Manfred Ruhle, T. Seeger, and Humberto Terrones "Exploring the carbon nanocosmos: doped nanotubes, networks, and other novel forms of carbon", Proc. SPIE 5118, Nanotechnology, (29 April 2003); https://doi.org/10.1117/12.499003
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KEYWORDS
Carbon
Carbon nanotubes
Chemical species
Single walled carbon nanotubes
Nanofibers
Composites
Nanolithography
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