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Proceedings Paper

A novel method for fabrication of size-controlled metallic nanoparticles by laser ablation
Author(s): Kaushik Choudhury; R. K. Singh; Mukesh Ranjan; Ajai Kumar; Atul Srivastava
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Paper Abstract

Time resolved experimental investigation of laser produced plasma-induced shockwaves has been carried out in the presence of confining walls placed along the lateral directions using a Mach Zehnder interferometer in air ambient. Copper was used as target material. The primary and the reflected shock waves and their effects on the evolution of medium density and the plasma density have been studied. The reflected shock wave has been seen to be affecting the shape and density of the plasma plume in the confined geometry. The same experiments were performed with water and isopropyl alcohol as the ambient liquids and the produced nanoparticles were characterised for size and size distribution. Significant differences in the size and size distribution are seen in case of the nanoparticles produced from the ablation of the targets with and without confining boundary. The observed trend has been attributed to the presence of confining boundary and the way it affects the thermalisation time of the plasma plume. The experiments also show the effect of medium density on the mean size of the copper nanoparticles produced.

Paper Details

Date Published: 1 December 2017
PDF: 8 pages
Proc. SPIE 10603, Photonics, Devices, and Systems VII, 1060304 (1 December 2017); doi: 10.1117/12.2292804
Show Author Affiliations
Kaushik Choudhury, IITB-Monash Research Academy (India)
R. K. Singh, Institute for Plasma Research (India)
Mukesh Ranjan, Institute for Plasma Research (India)
Ajai Kumar, Institute for Plasma Research (India)
Atul Srivastava, Indian Institute of Technology Bombay (India)

Published in SPIE Proceedings Vol. 10603:
Photonics, Devices, and Systems VII
Karel Fliegel; Petr Páta, Editor(s)

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