Synthesis of Single Wall Carbon Nanotubes by Laser Evaporation
The identification of single wall carbon nanotubes (SWCNT) can certainly be considered as one of the most significant stimulants for research in to nanostructures. This is due to their remarkable electronic and mechanical properties. In turn, this has led to a strong demand of SWCNTs for research and commercial applications. In addition, there is a need to clearly understand the growth mechanisms so as to have control over the electronic properties of SWCNT.
We have several laser ablation systems available to us through our own facilities and jointly with the Technical University Dresden.
Schematic of a laser ablation reactor:
Areas of interest:
- Analysis of the production conditions by laser ablation:
SWCNT yield, mean diameter and diameter distribution as function of temperature, gas, pressure, catalyst particles, laser pulse etc.
- Studies on the growth mechanisms:
TEM images of SWCNT bundles synthesized with metal oxide catalysts at low temperature:
- Special SWCNT: e.g. 13C doped SWCNT for NMR studies:
- Development of a CO2 CW laser ablation system.
M. H. Rümmeli, C. Kramberger, M. Loeffler, O. Jost, M. Bystrzejewski, A. Gruneis, T. Gemming, W. Pompe, B. Buechner, T. Pichler
Catalyst volume to surface area constraints for nucleating carbon nanotubes, Journal of Physical Chemistry B, 111 (2007) 8234
M. H. Rümmeli, M. Löffler, C. Kramberger, F. Simon, F. Fueloep, O. Jost, R. Schoenfelder, A. Grüneis, T. Gemming, W. Pompe, B. Buechner, T. Pichler,
Isotope-engineered single-wall carbon nanotubes; A key material for magnetic studies, Journal of Physical Chemistry, 111 (2007) 4094
X. Lin, M. H. Rümmeli, T. Gemming, T. Pichler, D. Valentin, G. Ruani, C. Taliani
Single-wall carbon nanotubes prepared with different kinds of NiCo catalysts: Raman and optical spectrum analysis, Carbon 45 (2007) 196
M. H. Rümmeli, E. Borowiak-Palen, T. Gemming, T. Pichler, M. Knupfer, M. Kalbác, L. Dunsch, O. Jost, S. R. P. Silva, W. Pompe, B. Büchner
Novel catalysts, room temperature and the importance of oxygen for the synthesis of single wall carbon nanotubes. Nano Letters, 5, (2005) 1209-1215
Dr. Mark H. Rümmeli
phone: +49 (0)351 4659510
fax: +49 (0)351 4659440