Ivanov Dmitriy S, Zhigilei Leonid V
Department of Materials Science & Engineering, University of Virginia, 116 Engineer's Way, Charlottesville, Virginia 22904-4745, USA.
Phys Rev Lett. 2003 Sep 5;91(10):105701. doi: 10.1103/PhysRevLett.91.105701. Epub 2003 Sep 4.
The kinetics and microscopic mechanisms of laser melting of a thin metal film are investigated in a computational study that combines molecular dynamics simulations with a continuum description of the laser excitation and subsequent relaxation of the conduction band electrons. Two competing melting mechanisms, homogeneous nucleation of liquid regions inside the crystalline material and propagation of melting fronts from external surfaces, are found to be strongly affected by the dynamics of the relaxation of the laser-induced pressure.
在一项计算研究中，结合分子动力学模拟与对激光激发以及随后导带电子弛豫的连续介质描述，对薄金属膜激光熔化的动力学和微观机制进行了研究。发现两种相互竞争的熔化机制，即晶体材料内部液体区域的均匀形核和熔化前沿从外表面的传播，受到激光诱导压力弛豫动力学的强烈影响。
