Nanophotothermolysis of Poly-(vinyl) Alcohol Capped Silver Particles
Division of Advanced Materials Engineering, College of Engineering, Chonbuk National University, Chonju, 561-756, South Korea
Nanoscale Research Letters 2008, 3:164-167 doi:10.1007/s11671-008-9131-7Published: 15 April 2008
Laser-induced thermal fusion and fragmentation of poly-(vinyl) alcohol (PVA)-capped silver nanoparticles in aqueous medium have been reported. PVA-capped silver nanoparticles with an average size of 15 nm were prepared by chemical reduction technique. The laser-induced photo-fragmentation of these particles has been monitored by UV-visible spectroscopy and transmission electron microscopy. The morphological changes induced by thermal and photochemical effects were found to influence the optical properties of these nanoparticles.