Affiliation:
1. University of Virginia
2. National University of Ireland
Abstract
A hybrid computational model combining classical molecular dynamics method for simulation of fast nonequilibrium phase transformations with a continuum description of the laser excitation and subsequent relaxation of the conduction band electrons is developed. The model is applied for a systematic computational investigation of the mechanisms of short pulse laser interaction with bulk metal targets. The material response to laser irradiation is investigated in three regimes corresponding to the melting and resolidification of the surface region of the target, photomechanical spallation of a single or multiple layers/droplets, and ablation driven by the thermodynamic driving forces. The conditions leading to the transitions between the different regimes and the atomic-level characteristics of the involved processes are established.
Reference28 articles.
1. Herrmann
R. F. W.
, GerlachJ., CampbellE. E. B., Ultrashort pulse laser ablation of silicon: an MD simulation study, Appl. Phys. A66, 35–42 (1998).
2. Zhigilei
L. V.
, LeveugleE., GarrisonB. J., YinglingY. G., and ZeifmanM. I., Computer simulations of laser ablation of molecular substrates, Chem. Rev.103, 321–348 (2003).
3. Cheng
C. R.
and XuX. F., Mechanisms of decomposition of metal during femtosecond laser ablation, Phys. Rev. B72, 165415165415 (2005).
4. Wang
X. W.
, Large-scale molecular dynamics simulation of surface nanostructuring with a laser-assisted scanning tunnelling microscope, J. Phys. D: Appl. Phys.38, 1805–1823 (2005).
5. Okamoto
T.
, OhmuraE., SanoT., MorishigeY., and MiyamotoI., Analytical study on metal microstructures using femtosecond laser, Appl. Phys. A 81, 639–643 (2005).
Cited by
5 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献