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Proceedings Paper

Preparation of Ag nanoparticles by two-wavelength laser ablation and fragmentation
Author(s): Jiri Pfleger; Petr Smejkal; Blanka Vlckova; Miroslav Slouf
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Paper Abstract

The work is focused on the refinement of the laser ablation method for a nanosized silver colloid preparation with regards to the nanoparticle size distribution, as well as to the reproducibility and stability of the ablated hydrosol. In the adopted procedure, additionally to the variation of the laser pulse energy, beam focusation and duration of laser ablation, we developed a technique based on further fragmentation of the ablated colloid solution by subsequent treatment with the 1064 and 532 nm nanosecond laser pulses. The method yields redistribution of nanoparticle diameters to a smaller mean size, as it was observed by transmission electron microscopy, quasielastic light scattering studies and surface plasmon (SP) optical extinction. It was shown that a similar fragmentation procedure is also effective in reduction of nanoparticle size and polydispersity of silver hydrosol prepared by routine chemical procedures and leads to a narrower SP extinction profile.

Paper Details

Date Published: 8 August 2003
PDF: 8 pages
Proc. SPIE 5122, Advanced Organic and Inorganic Optical Materials, (8 August 2003); doi: 10.1117/12.515724
Show Author Affiliations
Jiri Pfleger, Institute of Macromolecular Chemistry (Czech Republic)
Petr Smejkal, Charles Univ. (Czech Republic)
Blanka Vlckova, Charles Univ. (Czech Republic)
Miroslav Slouf, Institute of Macromolecular Chemistry (Czech Republic)

Published in SPIE Proceedings Vol. 5122:
Advanced Organic and Inorganic Optical Materials
Andris Krumins; Donats Millers; Inta Muzikante; Andris Sternbergs; Vismants Zauls, Editor(s)

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