tagungsband - Deutsche Bunsengesellschaft für Physikalische ...

Fr 18. 5. 2007, 11.30–12.15 A
Plenarvortrag - Hauptthema 2
Growth Dynamics and Selective Production
of Carbon Nano Structures
Yohji Achiba
Department of Chemistry, Tokyo Metropolitan
University, Hachioji, Tokyo Japan
In the present paper, we will propose a new growth
model for the formation of “fullerene nano cap structure”,
in connection with understanding general formation
mechanism of so called “carbon nano materials”
such as fullerenes, metallofullerenes, carbon
nanotubes and carbon nanohorn, etc. The presence
of the fullenere cap structure has commonly been
shown as a key carbon network structure by which
the structures of fullerenes, metallofullerenes and
carbon nanotubes are well characterized. However,
so far, there has still been a limited number of
knowledge directly related with understanding the
growth process of these materials.
On the other hand, understanding the growth
mechanism and controlling network generation of
carbon nano materials must be essentially important
for the potential application to nano size devices
or wires. Of particular importance is to directly
control both diameter and chirality of single
wall carbon nanotubes as their production processes.
In connection with our growth model and real experimental
control of diameter and chirality of carbon
nanotubes, we will present very recent experimental
results on the production of single wall caron
nanotubes with an almost single chirality by a laser
ablation method.