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Issue 9, 2013
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Cavitation dynamics of laser ablation of bulk and wire-shaped metals in water during nanoparticles production

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Abstract

Although the first nanoseconds to microseconds rule the resulting process yield of laser ablation in liquid, a comprehensive view involving combination of time-resolved measurement techniques is still lacking. In this paper, fundamental aspects of laser ablation of metals in water during the production of nanoparticles are discussed. Three fast diagnostic methods have been applied simultaneously. These are Optical Emission Spectroscopy for the plasma characterization, fast shadowgraph for plasma and cavitation bubble dynamics and laser scattering for the mechanisms of delivery of the produced materials in the liquid. Moreover, in order to validate the discussion, the effect on cavitation dynamics of the ablation of bulk and wire-shaped targets has been investigated together with the relative nanoparticles production yield. Unusual arrow–bow ejection phenomena between the cavitation bubble and the wire result in suppressed material back-deposition, causing efficient ejection of ablated matter into the liquid. The presented nanosecond and microsecond-resolved analysis allows estimating the timescale and role of the basic mechanisms involved in laser ablation in liquids as well as the thermodynamic characteristics of the processes.

Graphical abstract: Cavitation dynamics of laser ablation of bulk and wire-shaped metals in water during nanoparticles production

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Article information


Submitted
31 Jul 2012
Accepted
09 Nov 2012
First published
12 Nov 2012

Phys. Chem. Chem. Phys., 2013,15, 3083-3092
Article type
Paper

Cavitation dynamics of laser ablation of bulk and wire-shaped metals in water during nanoparticles production

A. De Giacomo, M. Dell'Aglio, A. Santagata, R. Gaudiuso, O. De Pascale, P. Wagener, G. C. Messina, G. Compagnini and S. Barcikowski, Phys. Chem. Chem. Phys., 2013, 15, 3083
DOI: 10.1039/C2CP42649H

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