8 August 2003 Preparation of Ag nanoparticles by two-wavelength laser ablation and fragmentation
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Proceedings Volume 5122, Advanced Organic and Inorganic Optical Materials; (2003); doi: 10.1117/12.515724
Event: 2003 Chapter books, 2003, Bellingham, WA, United States
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.
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Jiri Pfleger, Petr Smejkal, Blanka Vlckova, Miroslav Slouf, "Preparation of Ag nanoparticles by two-wavelength laser ablation and fragmentation", Proc. SPIE 5122, Advanced Organic and Inorganic Optical Materials, (8 August 2003); doi: 10.1117/12.515724; https://doi.org/10.1117/12.515724
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KEYWORDS
Nanoparticles

Silver

Laser ablation

Surface plasmons

Transmission electron microscopy

Ions

Metals

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