期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 92, 期 4, 页码 791-796出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-008-4712-y
关键词
-
The physical mechanisms responsible for the formation of nanobump structures on a surface of a thin metal film irradiated by a tightly focused femtosecond laser pulse are investigated in a large-scale molecular dynamics simulation. The simulation is performed with a combined atomistic-continuum model adapted for an adequate representation of laser-induced processes at the length-scale of the entire laser spot. The relaxation of the compressive stresses generated by the fast laser heating is identified as the main driving force responsible for the separation of the metal film from the substrate and formation of the nanobump. The kinetics of the transient melting and resolidification, occurring under conditions of the fast cooling due to the two-dimensional electron heat conduction, defines the shape of the nanobump. The predictions of the simulation are related to the surface structures observed in femtosecond laser nanostructuring.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据