Damaged carbon nanotubes get healed by ion irradiation

Jeet, Kiran and Jindal, V.K. and Bharadwaj, L.M. and Avasthi, D.K. and Dharamvir, Keya (2010) Damaged carbon nanotubes get healed by ion irradiation. Journal of Applied Physics, 108 (3). 034302-034306. ISSN 0021-8979 (print) 1089-7550 (online)

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Carbon nanotubes (CNTs) are being used for varied applications. It is therefore important to study their stability under extreme conditions of temperature and irradiation. In this work, we report the stability of CNTs [both single-wall CNTs (SWCNTs) and multiwalled CNTs (MWCNTs)] under irradiation of a carbon ion beam of energy 55 MeV. The irradiated samples were analyzed using Raman spectroscopy. The Raman results indicate the interesting phenomenon of healing or annealing of CNTs under ion beam irradiation. The annealing process appears to begin at the lowest value of fluences and persists for quite a good range of fluence values. As the irradiation dose increases ( ≈ 1×1014 ions/cm2) the MWCNTs begin to amorphize whereas the SWCNTs system continues to heal.

Item Type: Article
Uncontrolled Keywords: annealing, carbon nanotubes, ion beam effects, Raman spectra
Subjects: CSIO > Nano Science and Nano Technology
Depositing User: Ms T Kaur
Date Deposited: 23 Jan 2012 15:42
Last Modified: 10 Apr 2012 14:33
URI: http://csioir.csio.res.in/id/eprint/153

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