Adsorption and migration of carbon adatoms on carbon nanotubes

Krasheninnikov, A. V.; Nordlund, K.; Lehtinen, P.O.; Foster, A. S.; Ayuela, A.; Nieminen, R. M.

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Adsorption and migration of carbon adatoms on carbon nanotubes

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Title:	Adsorption and migration of carbon adatoms on carbon nanotubes
Author(s):	Krasheninnikov, A. V. ; Nordlund, K. ; Lehtinen, P.O. ; Foster, A. S. ; Ayuela, A. ; Nieminen, R. M.
Date:	2004
Language:	en
Pages:	4 1-4
Department:	University of Helsinki Department of Applied Physics
Series:	Physical Review B, Volume 69, issue 7
ISSN:	1550-235X
DOI-number:	10.1103/PhysRevB.69.073402
Keywords:	Diffusion, Nanotubes
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Citation: Krasheninnikov , A V , Nordlund , K , Lehtinen , P O , Foster , A S , Ayuela , A & Nieminen , R M 2004 , ' Adsorption and migration of carbon adatoms on carbon nanotubes : Density-functional ab initio and tight-binding studies ' , Physical Review B , vol. 69 , no. 7 , 073402 , pp. 1-4 . https://doi.org/10.1103/PhysRevB.69.073402
Abstract: We employ density-functional plane-wave ab initio and tight-binding methods to study the adsorption and migration of carbon adatoms on single-walled carbon nanotubes. We show that the adatom adsorption and migration energies strongly depend on the nanotube diameter and chirality, which makes the model of the carbon adatom on a flat graphene sheet inappropriate. Calculated migration energies for the adatoms agree well with the activation energies obtained from experiments on annealing of irradiation damage in single-walled nanotubes and attributed to single carbon interstitials.

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