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Effect of electron and ultraviolet irradiation on aligned carbon nanotube fibers
Author(s) -
Mikó Csilla,
Seo Jin Won,
Gaál Richárd,
Kulik Andrzej,
Forró László
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200669135
Subject(s) - carbon nanotube , irradiation , ultraviolet , materials science , electron beam processing , electrical resistivity and conductivity , nanotube , electron , formamide , composite material , nanotechnology , chemical engineering , photochemistry , chemical physics , chemistry , optoelectronics , organic chemistry , physics , quantum mechanics , nuclear physics , engineering
Abstract We carried out in situ Young's modulus and electrical resistivity measurements on macroscopic oriented ropes of singlewall carbon nanotubes under ultraviolet irradiation. Increases of both the electrical conductivity and the mechanical strength have been observed. These phenomena are explained by the photochemistry between the functional groups on the surface of singelwall nanotubes and dimethyl‐formamide molecules are trapped between the nanotubes. In contrast to high energy electrons during electron irradiation, the photon energy of the ultraviolet irradiation is not sufficient to displace the carbon atoms in the nanotube, therefore the graphitic structure of the tubes remains intact. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)