Ultrafast Modulation of the Molten Metal Surface Tension under Femtosecond Laser Irradiation

被引：0

作者：

李辰豪 ^{[1
]}

梁洪涛 ^{[1
]}

杨洋 ^{[1
]}

于志勇 ^{[1
]}

张鑫 ^{[1
]}

马祥明 ^{[1
]}

鲁文亮 ^{[1
]}

孙真荣 ^{[1
]}

程亚 ^{[1
]}

机构：

[1] State Key Laboratory of Precision Spectroscopy, School of Physics and Electronic Science,East China Normal University

来源：

Chinese Physics Letters | 2022年 / 07期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

D O I：

暂无

中图分类号：

TN249 [激光的应用]; O35 [流体力学];

学科分类号：

080103 ; 0803 ; 080401 ; 080704 ; 080901 ;

摘要：

We predict ultrafast modulation of the pure molten metal surface stress fields under the irradiation of the single femtosecond laser pulse through the two-temperature model molecular-dynamics simulations. High-resolution and precision calculations are used to resolve the ultrafast laser-induced anisotropic relaxations of the pressure components on the time-scale comparable to the intrinsic liquid density relaxation time. The magnitudes of the dynamic surface tensions are found being modulated sharply within picoseconds after the irradiation, due to the development of the nanometer scale non-hydrostatic regime behind the exterior atomic layer of the liquid surfaces.The reported novel regulation mechanism of the liquid surface stress field and the dynamic surface tension hints at levitating the manipulation of liquid surfaces, such as ultrafast steering the surface directional transport and patterning.

引用

页码：154 / 185

页数：32

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