摘要
利用Brenner(#2)半经验多体相互作用势和分子动力学模拟方法研究荷能的C2在金刚石(111)表面的化学吸附过程.模拟300 K时,初始入射动能分别为1,20,30 eV的C2团簇从6个不同位置轰击金刚石(111)表面,观察到C2团簇在金刚石(111)表面形成的吸附结构,表面C原子键的打开以及C2团簇与表面C原子成键等物理过程,并讨论不同入射位置和入射能量对沉积团簇的结构特性的影响.结果表明,对于表面不同的局部构型,C2团簇发生不同的碰撞过程,C2团簇入射能量的提高有利于成键过程的发生,从原子尺度模拟沉积机制.
Chemisorption of energetic C2 clusters on diamond(111) surface is investigated with molecular dynamics simulation and mang-body interatomic Brenner(#2) potential.At 300 K,molecular dynamics simulation are performed as a C2 cluster bombards six different bombarding sits on diamond(111) surface at incident energies of 1 eV,20 eV,30 eV,respectively.Different chemisorption configurations are observed.Deposition of C2 atoms are observed during the bonding collision.Influence of sits and impact energy on structure of deposited clusters are discussed.It shows that the collision processes change in different environments.Increase of cluster incident energy is apt to bond forming.
出处
《计算物理》
EI
CSCD
北大核心
2011年第1期99-104,共6页
Chinese Journal of Computational Physics
基金
内蒙古自治区教育厅科研基金(批准号:NJ04062)
内蒙古民族大学科研创新团队建设计划资助项目