Laser-induced modification of metal nanoparticles formed by laser ablation technique in liquids

• Published in: Applied surface science 2005-07, Vol.247 (1), p.418-422
• Main Authors: Tarasenko, N.V., Butsen, A.V., Nevar, E.A.
• Format: Article
• Language: English
• Subjects: Absorption and reflection spectra: visible and ultraviolet; Applied sciences; Chemistry; Colloidal state and disperse state; Colloids; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Exact sciences and technology; General and physical chemistry; Laser-induced modification; Metals. Metallurgy; Nanoparticles; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Physical radiation effects, radiation damage; Physics; Structure of solids and liquids; crystallography; Ultraviolet, visible, and infrared radiation effects (including laser radiation); Visible and ultraviolet spectra
• ISSN: 0169-4332; 1873-5584
• DOI: 10.1016/j.apsusc.2005.01.093

The effects of laser irradiation of silver colloids prepared by laser ablation technique in acetone have been studied. The laser irradiation was performed using laser radiation at different wavelengths (532, 266, 400 and 800 nm). Additional irradiation of colloids resulted in the changes of particles morphology, which were monitored by absorption spectroscopy and transmission electron microscopy methods. The experimental conditions favoring a dimension reduction of the initial particles and a formation of spherical size-controlled nanoparticles were found as well as irradiation conditions aiding the fabrication of nanowires. It was found that both the mean size of the nanoparticles and their stability could be controlled by changing the laser ablation and post-irradiation regimes.