Performance of Pico-Second Laser-Designed Silicon/Gold Composite Nanoparticles Affected by Precision of Focus Position

• DOI: 10.3390/cryst15020132
• Publication Date: 2025-01-27T09:59:10Z
• Authors: Yury V. Ryabchikov; Antonin Kana; Inam Mirza
• Keywords: Position (finance)

Pulsed laser ablation in liquids is one of the most versatile and widespread techniques for easy synthesis different types nanoparticles with controllable properties. A huge amount energy compressed into pulse that directed onto a solid target leads to ejection materials surrounding liquid. However, precision focus irradiation can play crucial role nanomaterials and, hence, significantly affect their physico-chemical In this paper, we investigated influence position spot on optical properties single- double-element composite silicon/gold nanoparticles, as well structure chemical composition. Deepening 0.5 mm inside bulk material led better stability colloidal solutions increased particle mass concentrations generated nanoparticles. This larger stronger absorbance, resulted slightly photoluminescence excitation efficiencies all nanostructures. Silicon-based had remarkable peak at ~430 nm upon xenon lamp excitation, which was pronounced pure silicon synthesized F+0.5 position. also best laser-induced heating (~0.85 °C/min) solutions. All nanocomposites revealed amorphous structures some Si(111) Au(111), suggesting formation gold silicide stoichiometries. The observed findings help choosing appropriate experimental conditions achieve performance laser-synthesized