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Migration of a carbon adatom on a charged single-walled carbon nanotube

Author(s): Han, Longtao; Krstic, Predrag; Kaganovich, Igor; Car, Roberto

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Abstract: We find that negative charges on an armchair single-walled carbon nanotube (SWCNT) can significantly enhance the migration of a carbon adatom on the external surfaces of SWCNTs, along the direction of the tube axis. Nanotube charging results in stronger binding of adatoms to SWCNTs and consequent longer lifetimes of adatoms before desorption, which in turn increases their migration distance several orders of magnitude. These results support the hypothesis of diffusion enhanced SWCNT growth in the volume of arc plasma. This process could enhance effective carbon flux to the metal catalyst.
Publication Date: 2-Feb-2017
Citation: Han, Longtao, Krstic, Predrag, Kaganovich, Igor, Car, Roberto. (2017). Migration of a carbon adatom on a charged single-walled carbon nanotube. Carbon, 116 (174 - 180. doi:10.1016/j.carbon.2017.02.003
DOI: doi:10.1016/j.carbon.2017.02.003
ISSN: 0008-6223
Pages: 174 - 180
Language: en
Type of Material: Journal Article
Journal/Proceeding Title: Carbon
Version: Author's manuscript

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