Analytical investigation of nano Particle generation in water based on laser ablation

The nano particles can be generated in the water under controlled exposure conditions using Q-SW Nd:YAG laser shots at 1064 nm. At first, the first metallic target was irradiated in water to generate nano particles. Then the second metallic target (different with first one) was immersed into water-metal suspension to be irradiated by laser shots too. The nano core-shells are created in the size of 30-50 nm. Mixed nano-particles were obtained by pulsed laser ablation of metallic targets was modeled using the Smoluchowski approach. The movement and aggregation of ablated fragments ejected from the targets were modeled based on Brownian motion, hydrodynamics considerations and coulomb's interactions. Therefore here we made an attempt to explain the some stages of the whole of phenomenon.

کلیدواژه ها:

nano particles ، core-shells ، Nd:YAG laser ، Smoluchowski ، aggregation