[11p-A24-1~6] 3.6 Laser processing

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[11p-A24-3] Fluid Simulation of the Deposition Characteristics
in Pulse Laser Ablation as a Function of Pipe Diameter

〇Yutsuki Hanada¹, Tamao Aoki¹, Ikurou Umezu¹ (1.Konan Univ.)

Keywords:

pulsed laser ablation method,spherical nanoparticles,inertial effect

In a previous study, we reported that when nanoparticles generated by gas-assisted pulsed laser ablation were deposited onto a substrate via a pipe and gas flow, the deposits formed a mountain-like shape when the pipe diameter was reduced. Therefore, to elucidate the dependence of the deposition on pipe diameter, we analyzed the gas flow using fluid dynamics simulations. We observed a tendency for the flow velocity to decrease near the substrate as the pipe diameter decreased, suggesting that differences in pipe diameter affect the deposition morphology.