Langevin dynamics with energy dissipation on periodic lattice structures modeling as an equivalent two-body method for atom-surface interactions

doi:10.1088/2053-1591/ab550f

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Langevin dynamics with energy dissipation on periodic lattice structures modeling as an equivalent two-body method for atom-surface interactions
	Zeng DD(曾丹丹); Liu C(刘崇); Jiang JZ(蒋建政); Fan J(樊菁)
刊名	MATERIALS RESEARCH EXPRESS
	2019-12-01
卷号	6 期号:12 页码:125507
关键词	atom-surface interactions trapping probability scattering angle residence time dissipating parameters energy accommodation coefficients
ISSN号	2053-1591
DOI	10.1088/2053-1591/ab550f
英文摘要	In this work, we propose a classical equivalent two-body (ETB) model that can capture more detailed dynamic features arising from energy dissipation and atom oscillations, by introducing the Langevin equation of a harmonic oscillator. The trapping probability, scattering angle and the residence time of Ar interacting with Pt (111) and W (110) surfaces predicted by the ETB model agree well with the measured experimental data or molecular dynamics simulations. Moreover, the ETB model is also used to study the influence of oscillating and dissipating properties on the thermal accommodation coefficients and rainbow scattering of gas atoms colliding with the surface. It is found that the dependence of energy accommodation coefficients and rainbow scattering on the oscillating and dissipating parameters shows nonlinear behaviors, and the associated mechanisms are disclosed. ETB model further provides the possibility to explore the physics beyond the existing two-body models for a better description of energy transferring during atom surface interactions.
分类号	Q3
WOS关键词	CLASSICAL-THEORY ; RAINBOW SCATTERING ; CARBON NANOTUBES ; STAINLESS-STEEL ; GAS ATOMS ; SIMULATION ; DESORPTION ; ACCOMMODATION ; PROBABILITY ; ADSORPTION
WOS研究方向	Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000499379300001
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China [11302227] ; Youth Innovation Promotion Association CAS [2015014] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences
其他责任者	Liu, C ; Fan, J (reprint author)
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/80786]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Acad Opto Elect, Beijing 100094, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zeng DD,Liu C,Jiang JZ,et al. Langevin dynamics with energy dissipation on periodic lattice structures modeling as an equivalent two-body method for atom-surface interactions[J]. MATERIALS RESEARCH EXPRESS,2019,6(12):125507.
APA	Zeng DD,刘崇,蒋建政,&樊菁.(2019).Langevin dynamics with energy dissipation on periodic lattice structures modeling as an equivalent two-body method for atom-surface interactions.MATERIALS RESEARCH EXPRESS,6(12),125507.
MLA	Zeng DD,et al."Langevin dynamics with energy dissipation on periodic lattice structures modeling as an equivalent two-body method for atom-surface interactions".MATERIALS RESEARCH EXPRESS 6.12(2019):125507.