Analysis of rapid melting and resolidification in femtosecond laser interaction with nanoparticle

作者：Li, Ling^*; Zhou, Ling; Shan, Yanguang; Yang, Mo

来源：Numerical Heat Transfer Part A-Applications, 2016, 69(8): 859-873.

DOI：10.1080/10407782.2015.1090836

• HEAT-TRANSFER
• POWDER LAYER
• METAL
• MODEL
• ELECTRON

The rapid melting and resolidification in femtosecond laser interaction with a single nanoparticle are investigated analytically. The dual-hyperbolic two-step (DHTS) model is coupled with the interfacial tracking method to describe the ultrafast melting and resolidification behavior. The optical reflectivity is solved using the Mie theory. Comparisons between the DHTS model and the parabolic two-step (PTS) model are presented. The results show that, for the femtosecond lasers, the melting depth predicted by the DHTS model is much higher than that of the PTS model. In addition, a phase map also presents the due parameters for laser sintering.

• 出版日期2016
• 单位上海理工大学