初始形状对石墨烯基底上的铂金属纳米薄膜动力学演化过程影响的研究

摘要

金属薄膜在基底上的快速熔解成核,广泛应用于镀膜工艺、涂料、表面吸附以及自清洁材料方面.该文通过分子动力学的研究方法,模拟了不同形状的Pt金属薄膜在石墨烯基底上的分子动力学演化过程.探讨了形貌、厚度、温度等因素对金属Pt薄膜成核过程与液滴脱离基底时速度的影响.这对纳秒激光照射基底薄膜表面热解实验有理论指导意义.%The rapid melting of metal film on the substrate is widely used in coating process,coating,surface adsorption and self-cleaning materials.In this paper,the molecular dynamics evolution of the metal film of Pt with different shapes is simulated by means of molecular dynamics.The effects of morphology,thick-ness,temperature and other factors on the nucleation process of the metal Pt film and the velocity of ejected nanodroplets are discussed.It is of theoretical significance to study that the metal films deposited on a sub-strate are heated up with nanosecond or femtosecond laser pules.