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Radiation damage to multi-walled carbon nanotubes and their Raman vibrational modes |
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| Authors: | U Ritter P Scharff OP Dmytrenko YuI Prylutskyy VA Gubanov SV Lizunova VV Shlapatskaya |
| Affiliation: | a Institute of Physics, TU-Ilmenau, D-98684 Ilmenau, P.O. Box 100565, Germany b Kyiv National Shevchenko University, Volodymyrska Str., 64, 01033 Kyiv, Ukraine c Institute of Physical Chemistry of NAS of Ukraine, pr. Nauky, 31, 03028 Kyiv, Ukraine d CNRS-UMR 8609, University Paris XI, France |
| Abstract: | The influence of the radiation damage to multi-walled carbon nanotubes (MWCNT) during the high-energy electron irradiation (Ee = 1.8 MeV) with different doses of absorption (Dn = 0.5; 1.0; 1.5 and 2.0 MGy) on their Raman vibrational spectra is studied in detail. The modification of both radial and tangential optical vibrations is observed depending on radiation dose. This is manifested both in the frequency shifts of the vibrational modes and in a change in the intensity of the Raman scattering, which corresponds to different optical vibrations. This behavior of Raman spectrum is explained by appearance and increase in the concentration of radiation defects and by seams of separate layers of nanotubes. |
| Keywords: | Carbon nanotubes Arc discharge Raman spectroscopy Defects |
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