Study of metallic nano-structures formed in liquids by large pulsed laser radiation spots using transmission electron microscopy
Year: 2024
Type: article
Abstract: Pulsed Laser Ablation in Liquids (PLAL) represents a prominent method for synthesising metallic nanoparticles and nano-alloys. This technique offers the potential precise control over the process and resulting products. However, a comprehensive description of the underlying mechanisms is still necessary to enhance control. Our investigation involved the utilisation of low fluence 6 ns laser pulses on 35 mm2 areas of thin films comprising layers of Ag, Pt, and Au to investigate the nano-structures and alloys obtained. The large laser spot produced nano-structures with peculiar morphological characteristics. Their analysis by High-Resolution Transmission Electron Microscopy (HRTEM) confirms that the early stages of the ablation plume play an essential role in the nucleation of nano-structures when the ablating metals have a strong interaction with the fluid, which has surpassed its critical temperature and pressure.
Source: Nano Express
Authors: Samuel Sánchez-Torres, Brenda-Lizeth Pérez-García, Samuel Tehuacanero-Cuapa, Alejandro Crespo-Sosa
Institution: Universidad Nacional Autónoma de México
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,085
Award: G3050754229
OpenAlex ID: W4405222789