Adsorption and migration of carbon adatoms on carbon nanotubes

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Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2004

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Mcode

Degree programme

Language

en

Pages

4
1-4

Series

Physical Review B, Volume 69, issue 7

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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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