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TECHNICAL PAPERS: Micro/Nanoscale Heat Transfer

Molecular Dynamics Study of Phase Change Mechanisms During Femtosecond Laser Ablation

[+] Author and Article Information
Xianfan Xu, Changrui Cheng, Ihtesham H. Chowdhury

School of Mechanical Engineering, Purdue University

J. Heat Transfer 126(5), 727-734 (Nov 16, 2004) (8 pages) doi:10.1115/1.1797011 History: Received August 04, 2003; Revised June 03, 2004; Online November 16, 2004
Copyright © 2004 by ASME
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Figures

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(a) p-v diagram of phase explosion at spinode; and (b) p-v diagram of critical point phase separation
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Schematic of the computational domain
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Schematic of domain division and position and velocity exchange in parallel calculation
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Comparison of electron (left column) and lattice temperatures (right column) obtained from MD and FD calculations
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Comparison of the melt depth obtained from MD and FD calculations
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Atomic number density at different time steps
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Atomic positions at different time steps
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Atomic position at 18 ps, showing a layer in the y-direction from y=4 nm to 5 nm
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Surface temperature history

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