Abstract: Colloidal silver nanoparticles were prepared by means of laser ablati on with 10 ns pulse width laser at 532 nm wavelength in a series of solvents water, ethanol, glycol, etc. The nanoparticles were characterized by virtu e of UV/Vis/NIR absorption spectrometry, transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The results show that silver nanoparticles could be prepared by using laser ablation, furthermore, the solvent plays im portant roles in not only the formation rate of silver particles but also the stability of the silver colloid.

Key words: laser ablation, Ag sol, solvent, acetone