Effect of residual catalyst on the vibrational modes of single-walled carbon nanotubes.

Autor: McNeil, L. E., Park, H., Lu, J. P., Peters, M. J.
Předmět:
Zdroj: Journal of Applied Physics; 11/1/2004, Vol. 96 Issue 9, p5158-5162, 5p, 1 Diagram, 2 Charts, 3 Graphs
Abstrakt: Raman scattering measurements of single-walled carbon nanotubes prepared by laser ablation with Ni/Co catalyst show that samples that have not been purified have a graphitic mode frequency that is 8 cm-1 lower than that of samples from which most of the catalyst has been removed. The shift is attributed to charge transfer from the catalyst particles to the nanotubes. The charge transfer from the residual catalyst also affects the temperature dependence of the radial breathing mode. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index