Scientific Results

Study on the productivity of silicon nanoparticles by picosecond laser ablation in water: towards gram per hour yield

Year: 2014

Authors: Intartaglia R., Bagga K., Brandi F.

Autors Affiliation: Istituto Italiano di Tecnologia, Nanophysics Department, via Morego 30, 16163 Genova, Italy; Istituto Nazionale di Ottica, CNR, Via G. Moruzzi 1, 56124 Pisa, Italy

Abstract: An investigation on the productivity of silicon nanoparticles by picosecond laser ablation in water is presented. A systematic experimental study is performed as function of the laser wave length, fluence and ablation time. In case of ablation at 1064 nm silicon nanoparticles with a mean diameter of 40 nm are produced. Instead, ablation at 355 nm results in nanoparticles with a mean diameter of 9 nm for short ablation time while the mean diameter decreases to 3 nm at longer ablation time. An original model based on the in-situ ablation/photo-fragmentation physical process is developed, and it very well explains the experimental productivity findings. There ported phenomenological model has a general validity, and it can be applied to analyze pulsed laser ablation in liquid in order to optimize the process parameters for higher productivity. Finally, an outlook is given towards gram per hour yield of ultra-small silicon nanoparticles. (C) 2014 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 22 (3)      Pages from: 3117  to: 3127

More Information: The authors gratefully acknowledge Marco Scotto d\’Abbusco for technical assistance, Simone Nitti for Inductively Coupled Plasma analysis, and the Istituto Italiano di Tecnologia for supporting this study.
KeyWords: laser materials processing; nanomaterials; gold nanoparticles; colloidal nanoparticles; submicrometer spheres
DOI: 10.1364/OE.22.003117

Citations: 44
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