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Proceedings Paper

Carbon nanostructures by gas-phase laser pyrolysis
Author(s): R. Alexandrescu; F. Dumitrache; L. Gavrila Florescu; I. Morjan; E. Popovici; M. Scarisoreanu; I. Sandu; I. Soare; I. Voicu
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Paper Abstract

Carbon-made materials have been the field of major discoveries with the identification of new phases, which have stimulated a huge effort to understand their properties. Laser pyrolysis of hydrocarbons is based on a high temperature C/H/O/... system of well-established composition and allows obtaining carbon nanostructures from the almost amorphous carbon and particles with a turbostratic structure up to those characterized by a high degree of curvature. The variation of the gas composition and experimental parameters controls the final particle morphology providing useful functional properties. Gas-phase hydrocarbons were used either in resonant or non-resonant laser pyrolysis processes. The formation of different nanostructures is related to the presence of heteroatom in the reactants. Focusing, in the context of necessary presence of this heteroatom in the gas composition, on the present questions concerning the rational synthesis of nanostructures with controlled dimensionality, size and potentially properties, the work presents some significant changes in soot morphology produced by the variation of the experimental parameters and these, sometimes unavoidable, heterogeneous atoms.

Paper Details

Date Published: 25 April 2007
PDF: 10 pages
Proc. SPIE 6606, Advanced Laser Technologies 2006, 66060J (25 April 2007); doi: 10.1117/12.729584
Show Author Affiliations
R. Alexandrescu, National Institute for Laser, Plasma and Radiation Physics (Romania)
F. Dumitrache, National Institute for Laser, Plasma and Radiation Physics (Romania)
L. Gavrila Florescu, National Institute for Laser, Plasma and Radiation Physics (Romania)
I. Morjan, National Institute for Laser, Plasma and Radiation Physics (Romania)
E. Popovici, National Institute for Lasers, Plasma and Radiation Physics (Romania)
M. Scarisoreanu, National Institute for Laser, Plasma and Radiation Physics (Romania)
I. Sandu, National Institute for Laser, Plasma and Radiation Physics (Romania)
I. Soare, National Institute for Laser, Plasma and Radiation Physics (Romania)
I. Voicu, National Institute for Laser, Plasma and Radiation Physics (Romania)


Published in SPIE Proceedings Vol. 6606:
Advanced Laser Technologies 2006

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