Production of titanium and gold particles by laser ablation of thin films in water

Suspensions of metal particles based on titanium and gold were obtained by pulsed laser ablation of thin metal films on glass substrates in contact with water. The particles were characterized by scanning electron microscopy and dynamic light scattering. It is shown that the particles are polydisperse. The particle size varies depending on the of the laser energy. For particles based on titanium, two fractions are distinguished with sizes of 74–180 nm and 510–635 nm. In the case of gold nanoparticles, their size does not exceed 100 nm. However, at the maximum energy of the laser pulse a fraction with a size of 416 $\pm$ 28 nm appears. The values of the $\zeta$ potentials and the concentration of particle solutions are given.