Scientific Results

Effect of picosecond laser induced cavitation bubbles generated on Au targets in a nanoparticle production set-up

Year: 2013

Authors: Tiberi M., Simonelli A., Cristoforetti G., Marsili P., Giammanco F., Giorgetti E.

Autors Affiliation: Dept. of Physics “E. Fermi”, University of Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa, Italy; ILIL, National Institute of Optics, Research Area of National Research Council, Via G. Moruzzi 1, 56124 Pisa, Italy; Institute of Complex Systems of the National Research Council, ISC-CNR, Via Madonna del Piano 10, Sesto Fiorentino, FI, Italy

Abstract: This work is aimed at an analysis of the influence on the efficiency of nanoparticle production of a cavitation bubble (CB), which forms during the laser ablation process in high-fluence regime. The CB is produced on an Au metal target immersed in water by 1064 nm ps Nd:YAG laser pulses at different fluences. Its time-space evolution is monitored by a shadowgraphic set-up, while the Au nanoparticles production rate is tagged by the growth of the plasmon resonance, which is detected by measuring shot-by-shot the UV-Vis absorbance. We analyze the dependence of bubble size on the experimental parameters. Our results appear of interest to enhance the nanoparticle production efficiency in a liquid medium.

Journal/Review: APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING (PRINT)

Volume: 110 (4)      Pages from: 857  to: 861

More Information: Funding from the project NABLA (Decree n. 4508-September 1, 2010 by Regione Toscana-Italy, PAR FAS 2007-2013 funds, Action 1.1.a.3) and PRIN2009 \”Novel plasmon-based processes and materials for sensor applications\” of the Italian Ministry of Research is acknowledged.
KeyWords: Cavitation Bubble; Pulse Laser Ablation; Nanoparticles (NPs)
DOI: 10.1007/s00339-012-7165-2

Citations: 15
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