Gold nanoparticle production by laser ablation in liquid nitrogen medium followed by cryogenic medium substitution with ethanol

The use of liquid nitrogen as a medium for laser ablation made it possible to obtain Au particles shaped as cores, cores/hollow shells, and hollow shells by radiation of a picosecond Nd:YAG laser. In this case, the substitution of the cryogenic liquid medium of the colloid by evaporating on the surface of a room-temperature liquid causes the shift and broadening of the plasmon resonance peak of Au nanoparticles, which results from the formation of fractal nanoparticle aggregates.     

Laser Ablation of Titanium in Cryogenic and Room-Temperature Liquids

The results of processing of an OT4-0 titanium plate surface in media of C₂H₅OH + H₂O and liquid argon by radiation of a pulse-periodic Nd:YAG laser with subnanosecond pulses are presented. A change in current-carrying properties of structures synthesized in C₂H₅OH + H₂O is studied. The effect of subsequent influence of HNO₃ + HF acid solution on laser-induced structures is considered.     

Study of the effect of crystallization parameters on gaseous inclusions in sapphire ribbons grown by the Stepanov method

Crystallography Reports - The effect of growth parameters on the two main types of gaseous inclusions in sapphire ribbons—bubbles in the crystal bulk and near-surface pores—have been...