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

Autor(en)

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

Abstrakt

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.

Organisation(en)

Dynamik Kondensierter Systeme

Externe Organisation(en)

Eötvös Loránd University Budapest, Budapest University of Technology and Economics

Journal

Physical Review B

Band

Anzahl der Seiten

ISSN

1098-0121

DOI

https://doi.org/10.1103/PhysRevB.75.195419

Publikationsdatum

2007

Peer-reviewed

ÖFOS 2012

210006 Nanotechnologie

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