Molecular Dynamics Simulations of Femtosecond Laser Ablation and Spallation of Gold

2010 ◽  
Author(s):  
Brian J. Demaske ◽  
Vasily V. Zhakhovsky ◽  
Nail A. Inogamov ◽  
Ivan I. Oleynik ◽  
Claude Phipps
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Femtosecond Laser ◽  
Molecular Dynamics Simulations ◽  
Femtosecond Laser Ablation ◽  
Dynamics Simulations

Molecular Dynamics Study of Mechanism of Ablation Induced by a Femtosecond Laser Pulse

2003 ◽  
Author(s):  
Changrui Cheng ◽  
Xianfan Xu
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Laser Pulse ◽  
Femtosecond Laser ◽  
Critical Point ◽  
Change Process ◽  
Femtosecond Laser Ablation ◽  
Md Simulations ◽  
Femtosecond Laser Irradiation ◽  
Transient Temperature

In this work, molecular dynamics (MD) simulations are carried out to study femtosecond laser ablation of a metal, with an emphasis on the understanding of the mechanism of laser ablation. Theoretically, it has been shown that under intense femtosecond laser irradiation, the material can undergo a volumetric phase change process; its temperature can be close to or even above the critical point. MD simulations allow us to determine the transient temperature of the irradiated material as well as the transient thermodynamic state, which explain the mechanisms of femtosecond laser ablation.

Molecular Dynamics Study of Phase Change Mechanisms During Femtosecond Laser Ablation

2004 ◽  
Vol 126 (5) ◽  
pp. 727-734 ◽  
Author(s):  
Xianfan Xu ◽  
Changrui Cheng ◽  
Ihtesham H. Chowdhury
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Femtosecond Laser ◽  
Phase Change ◽  
Change Process ◽  
Femtosecond Laser Ablation ◽  
Femtosecond Laser Irradiation ◽  
Maximum Temperature ◽  
Transient Temperature ◽  
Phase Change Process

In this work, Molecular Dynamics (MD) simulation is employed to investigate femtosecond laser ablation of copper, with an emphasis on the understanding of the mechanism of phase change during laser ablation. Laser induced heat transfer, melting, surface evaporation, and material ablation are studied. Theoretically, it has been suggested that under intense femtosecond laser irradiation, the material undergoes a volumetric phase change process; its maximum temperature can be close to or even above the thermodynamic critical point. The MD simulations allow us to determine the transient temperature history of the irradiated material and to reveal the exact phase change process, which explains the mechanisms of femtosecond laser ablation. A finite difference calculation is also performed, which is used to compare results of heating and melting prior to a significant amount of material being ablated.

Molecular dynamics simulations studies of laser ablation in metals

2012 ◽  
Author(s):  
Johannes Roth ◽  
Steffen Sonntag ◽  
Johannes Karlin ◽  
Carolina Trichet Paredes ◽  
Marc Sartison ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Laser Ablation ◽  
Molecular Dynamics Simulations ◽  
Dynamics Simulations
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