Polarized Raman Study of Aligned Multiwalled Carbon Nanotubes
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- 21 February 2000
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 84 (8), 1820-1823
- https://doi.org/10.1103/physrevlett.84.1820
Abstract
Polarized Raman spectra of high purity aligned arrays of multiwalled carbon nanotubes, prepared on silica substrates from the thermal decomposition of a ferrocene-xylene mixture, show a strong dependence of the graphitelike band and the disorder-induced band on the polarization geometry employed in the experiments. The experimental -band intensity exhibits a minimum at in the configuration, in good agreement with theoretical predictions of a characteristic minimum at 54.7° for modes in single wall nanotubes, where denotes the angle between the polarization direction and the nanotube axis.
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