Eintrag weiter verarbeiten
The effects of inhomogeneous isotope distribution on the vibrational properties of isotope enriched double walled carbon nanotubes
Gespeichert in:
Personen und Körperschaften: | , , , , , , |
---|---|
Titel: |
The effects of inhomogeneous isotope distribution on the vibrational properties of isotope enriched double walled carbon nanotubes |
In: | physica status solidi (b), 244, 2007, 11, S. 4257-4260 |
veröffentlicht: |
Wiley
|
Umfang: | 4257-4260 |
ISSN: |
0370-1972 1521-3951 |
DOI: | 10.1002/pssb.200776146 |
Zusammenfassung: | <jats:title>Abstract</jats:title><jats:p>The radial breathing mode in the Raman spectrum of <jats:sup>13</jats:sup>C isotope enriched single walled carbon nanotubes is inhomogeneously broadened due to the random distribution of isotopes. We study this effect theoretically using density functional theory within the local density approximation and compare the result with experiments on isotope engineered double walled carbon nanotubes in which the inner tubes were grown from a mixture of <jats:sup>13</jats:sup>C enriched fullerenes and natural fullerenes. As explained by the calculations, this synthesis procedure leads to an increased inhomogeneity compared to a case when only enriched fullerenes are used. The good agreement between the measurements and calculations shows the absence of carbon diffusion along the tube axis during inner tube growth, and presents a strong support of the theory that inner tube growth is governed by Stone–Wales transformations following the interconnection of fullerenes. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p> |
Format: | E-Article |
Quelle: | Wiley (CrossRef) |
Sprache: | Englisch |