The effect of laser wavelength on structure of gold nanowire networks

Three different colloids of gold nanowire networks in pure water at room temperature were prepared by pulse laser ablation of a gold metal disc using different wavelength of Nd: YAG laser. The products were examined by transmission electron microscopy (TEM) and optical absorption spectroscopy. The TEM images of the products revealed that the attachment of gold nanowire to one another is more when it is prepared using shorter laser wavelength (355 nm) as compared with those prepared with longer laser wavelength (532 or 1064 nm). The results of the laser ablation of gold metal in pure water using three different laser wavelengths of Nd: YAG laser are compared with their corresponding TEM images.