Nanoparticles in Laser Ablation: Fractions

The pulsed laser ablation of targets is a promising direction for creating metal nanoparticles that are widely used in various fields of science, technology, and for biomedical applications. To improve laser technologies, it is necessary to control the ablation process, ensuring the necessary size distribution of the resulting nanoparticles, which is often bimodal. The work proposes an approach that allows one to estimate the mass of the nanoparticle fraction during laser ablation with short pulses from a scanning electron microscopy (SEM) image or microphotograph of holes in a metal film. The investigation is carried out using nanosecond laser pulses and gold films 50 nm in thickness.