Role of water temperature in laser induced breakdown at nickel-water interface for generation of nickel oxide nanocolloids

Abstract

A pulsed nanosecond laser was focused onto a nickel wire target in distilled water leading to the formation of nickel oxide nanoparticles. The ambient temperature of the liquid was varied and its effect on the associated fluid dynamical counterpart cavitation bubbles was investigated. The cavitation bubble pressure and temperature at different liquid temperature are deduced and its effect on the colloidal solution containing nanoparticles is elucidated.

Magnetic field assisted nucleation dynamics of laser induced manganese oxide nanoparticles in water

“…Nucleation modelling was thus extended to ferromagnetic nickel target immersed in water. Nucleation models-model A (section 3.1) and model B (section 3.2) have been used to determine how the magnetic field effect the nucleation and growth of NiO nano-particles by considering nickel as the target in water since on ablating nickel target in water, NiO nano-particles are formed as reported [61,62]. The formation of NiO nano-particles is further confirmed from figures S1(a), (b) and S2(a), (b) (supplementary), which shows HR-TEM images and interplanar spacing of 0.242, 0.208 and 0.104 nm corresponding to (111), ( 200) and (400) lattice planes respectively; and at 0.15 T magnetic field the interplanar distance observed are 0.208 and 0.104 nm attributes to (220) and (400) lattice planes of NiO respectively [63][64][65][66].…”