Tuning the size of aluminum oxide nanoparticles synthesized by laser ablation in water using physical and chemical approaches

Tunable green to red ZrO2:Er nanophosphors

“…Some examples are the works reported by the S. A. Al-Mamun et al 58,59 in which they studied almost all these parameters for the case Al 2 O 3 NPs produced by PLAL in water, yielding to narrower size Fig. 2 Raman spectra of the targets (left) and PLAL produced NPs (right) by using 325 nm wavelength excitation in backscattering geometry.…”

A simple strategy for enhanced production of nanoparticles by laser ablation in liquids

“…Considering that usually the plasma plume, ablated particles and cavitation bubbles are positioned along the laser beam and perpendicular to the target surface [6,7,9], while here they are inherently spatially bypassed through reirradiation by successive pulses, it is supposed that NPs absorption is prevented, probably affecting the ablation productivity. At higher repetition rates (1 kHz and above)] [32], the shielding and reflection of the incoming pulse by cavitation bubbles and consequently the reduction of the pulse energy that reaches the target surface should be also significant. Accordingly, it is believed that the conceived configuration might play a significant role in PLAL experiments at higher repetition rates, providing bubbles propagation, deviating from the laser beam path.…”

Experimental investigation on the use of highly charged nanoparticles to improve the stability of weakly charged colloidal system

“…The measurement was performed at peak wavelength of each material to trace the change in intensity which can be further used to describe the suspension stability. The list of peak wavelengths used for completing this task is given in Table 3 which follows closely with the literature [59][60][61]. For binary system, the absorbance measurements were taken at the peak wavelength of each negligibly charged colloid to reflect their presence within the complexes.…”