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31 May 2006 Formation of iron oxide nanoparticles by pulsed laser ablation
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Proceedings Volume 6263, Atomic and Molecular Pulsed Lasers VI; 62630Q (2006)
Event: Atomic and Molecular Pulsed Lasers VI, 2005, Tomsk, Russian Federation
Femtosecond and nanosecond lasers are used to produce oxide nanoparticles by laser ablation of steel. The deposition of those particles on the surface strongly modifies its properties. The aim of this study is the understanding of the nanoparticle formation. The dynamics of the plume expansion and of the nanoparticle deposition processes are investigated by means of in-situ time resolved optical analysis. Scanning electron microscopy and atomic force microscopy are used to characterise the particle film morphology deposited on the surface. The influence of laser parameters such as pulse duration (ns, fs), wavelength (UV, visible, IR) and background gas pressure (10 mbar - 1 bar) on the processes of nanoparticle formation is studied. It is shown that a high density plasma favours the particle formation, and that the high temperature of the plume obtained with nanosecond JR irradiation impedes the nanoclusters nucleation and prevents an efficient nanoparticle formation.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
A. Péreira, A. Cros, Ph. Delaporte, T. Itina, M. Sentis, W. Marine, A.L. Thomann, and C. Boulmer-Leborgne "Formation of iron oxide nanoparticles by pulsed laser ablation", Proc. SPIE 6263, Atomic and Molecular Pulsed Lasers VI, 62630Q (31 May 2006);

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