In this paper, the technological aspects of gold nanoparticles producing by laser ablation in liquids were studied. The ambiguous effect of the laser pulse energy, the duration of radiation, and the size of the cuvette with liquid on the process was estimated. It was shown that reaching optimal process performance with the required dispersion is a compromise, to achieve it is necessary to accurately control these parameters. An increase in energy density increases productivity, but reduces the stability of the solution and leads to particle sticking. Long-term irradiation of the target in a constant volume of liquid makes it possible to increase the concentration of the solution, which is useful for subsequent drying of the solution to a nanoparticles but reduces the efficiency of the process and negatively affects the dispersion. Nanoparticles that are already generated after previous pulses, firstly, absorb laser radiation, and secondly, they heat up and can coagulate. This effect was demonstrated by the results of measuring the growth rate of the extinction coefficient at various cell volumes.
Production of Au Nanoparticles by Laser Ablation in Liquids
Lect. Notes in Networks, Syst.
International School on Neural Networks, Initiated by IIASS and EMFCSC ; 2022 ; St.Petersburg, Russia February 08, 2022 - February 10, 2022
Networked Control Systems for Connected and Automated Vehicles ; Chapter : 36 ; 369-377
2022-11-16
9 pages
Article/Chapter (Book)
Electronic Resource
English
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