Inhomogeneity of 13C isotope distribution in isotope engineered carbon nanotubes: Experiment and theory

Viktor Zólyomi, Ferenc Simon, Á Rusznyák, Rudolf Pfeiffer, Herwig Peterlik, Hans Kuzmany, Jenö Kürti

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


Vibrational modes of C13 isotope enriched single-walled carbon nanotubes are inhomogeneously broadened due to the random distribution of isotopes. We study this effect on the radial breathing mode theoretically using density-functional theory within the local-density approximation and compare the result with experiments on inner tubes in double-walled carbon nanotubes grown from C13-enriched fullerenes. Increased inhomogeneity was achieved by growing inner tubes from a mixture of enriched and natural fullerenes, which is explained by the calculations. This shows the absence of carbon diffusion along the tube axis during inner tube growth, supporting the theory of inner tube growth by Stone-Wales transformations from interconnected fullerenes.
FachzeitschriftPhysical Review B
PublikationsstatusVeröffentlicht - 2007

ÖFOS 2012

  • 210006 Nanotechnologie