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Proceedings Paper

Silver nanoparticles produced by PLD in vacuum
Author(s): A. Og. Dikovska; I. G. Dimitrov; M. T. Alexandrov; N. N. Nedyalkov; P. A. Atanasov
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Paper Abstract

In this work, we report the fabrication of silver (Ag) nanoparticles on silica substrate in vacuum by PLD using a third harmonic of Nd:YAG laser (λ = 355 nm). The existence of Ag nanoparticles was evidenced by transmission electron microscopy (TEM) and an analysis of the size of the nanoparticles as a function of the number of laser pulses was performed. The Ag nanoparticles produced had mean diameters in the range from 1 nm to 15 nm, with the size distribution centered near 5 nm. The presence of the Ag nanoparticles was also evidenced from the appearance of a strong optical absorption band into the measured UV-VIS spectra, associated with surface plasmon resonance. Broadening of the absorption peak and its shifting to the longer wavelengths was observed as the number of laser pulses increased. A theoretical study of the optical properties of Ag nanoparticles predicts the presence of a thin oxide shell covering the nanoparticles.

Paper Details

Date Published: 16 November 2010
PDF: 6 pages
Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 775120 (16 November 2010); doi: 10.1117/12.882081
Show Author Affiliations
A. Og. Dikovska, Institute of Electronics (Bulgaria)
I. G. Dimitrov, Institute of Electronics (Bulgaria)
M. T. Alexandrov, Institute of Experimental Pathology and Parasitology (Bulgaria)
N. N. Nedyalkov, Institute of Electronics (Bulgaria)
P. A. Atanasov, Institute of Electronics (Bulgaria)

Published in SPIE Proceedings Vol. 7751:
XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Tanja Dreischuh; Petar A. Atanasov; Nikola V. Sabotinov, Editor(s)

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