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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: | 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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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 . DOI: 10.1103/PhysRevB.69.073402 |
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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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