Dynamics of carbon nanotube growth from fullerenes.
The growth of double-walled carbon nanotubes from peapods was studied. The transformation was monitored by the decrease of fullerene Raman lines, the growth of inner tube Raman lines, and the development of X-ray diffraction patterns. A visual check of the growth process by HRTEM provided additional information. From the difference in time constants for the bleaching of fullerene Raman lines and for the growth of nanotube Raman lines, the existence of an intermediate phase was concluded that was eventually observed in X-ray diffraction and HRTEM. Time constants for the growth of large diameter inner tubes were up to a factor two larger than for small diameter inner tubes. The results fully support the fullerene coalescence growth model triggered by Stone-Wales transformations.
Pfeiffer
Rudolf
R
Fakultät für Physik, Universität Wien, Strudlhofgasse 4, 1090 Wien, Austria, and AIST, Tsukuba, Japan. rudolf.pfeiffer@univie.ac.at
Holzweber
Matthias
M
Peterlik
Herwig
H
Kuzmany
Hans
H
Liu
Zheng
Z
Suenaga
Kazu
K
Kataura
Hiromichi
H
D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D037741:Fullerenes / Q000737:chemistry*; D007700:Kinetics; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008958:Models, Molecular; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D013499:Surface Properties
D037741:Fullerenes; D046911:Macromolecular Substances; D037742:Nanotubes, Carbon