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Proceedings Paper

NIR and UV spectroscopic techniques as tools to control nanoparticle growth in laser pyrolysis process
Author(s): Roberta Fantoni; Luigi De Dominicis; Stefano Martelli; Mario Di Fino; Mariano Carpanese; Vladimir Koutniak; F. Fabbri
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Paper Abstract

Due to the foreseen possibility of technological applications, there is an increasing interest in nanocrystalline soft materials, especially in iron silicon alloys. The synthesis of nanoparticles by means of CO2 laser induced pyrolisys is an important method for the production of the latter material with high purity upon well controlled conditions. In this production process, implying fast ultrafine powders condensation from the gas phase, the temperature is a key parameter, since the particles size is strongly affected by its variations. The potentialities of laser spectroscopic methods in the ultraviolet and infrared spectral region to monitor nanoparticles growth in a semi-industrial flow reactor for production of Si and FeSi nanoparticles and operating in ENEA, are explored in the present work.

Paper Details

Date Published: 14 February 2002
PDF: 9 pages
Proc. SPIE 4578, Fiber Optic Sensor Technology and Applications 2001, (14 February 2002); doi: 10.1117/12.456067
Show Author Affiliations
Roberta Fantoni, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
Luigi De Dominicis, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
Stefano Martelli, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
Mario Di Fino, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
Mariano Carpanese, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
Vladimir Koutniak, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)
F. Fabbri, Ente per le Nuove tecnologie l'Energie e l'Ambiente (Italy)


Published in SPIE Proceedings Vol. 4578:
Fiber Optic Sensor Technology and Applications 2001
Michael A. Marcus; Brian Culshaw, Editor(s)

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