Preparation and Characterization of Nano-Gold by Laser Ablation

Noble metals gold NPs are produced by pulsed ("Q-switched, 1064 or 532nm Nd: YAG") laser ablation of gold foil dipped in double distilled water DDW. (PLAL) process is performed with different laser shots such as 25, 50, 75 and 90 pulse at (700 mJ, wavelength 1064 nm and room temperature), laser energy in range (400-700) mJ at (90 pulse, wavelength 1064 and room temperature ), two wavelength (532-1064) nm at (700 mJ,90 pulse, and room temperature) two water's temperature (25-50) Co and liquid depth 9 mm. The effect of these parameters has been studied on structurally, optically and morphologically and investigated by using scanning electron microscopy (SEM), UV-visible spectroscopy and atomic force microscopy (AFM). The absorption spectra of