共 50 条
Effect of strain on atomic-scale friction in layered MoS2
被引:37
|作者:
Wang, Changqing
[1
,2
,3
]
Li, Haisheng
[4
]
Zhang, Yongsheng
[3
]
Sun, Qiang
[1
,2
]
Jia, Yu
[1
,2
]
机构:
[1] Zhengzhou Univ, Sch Phys & Engn, Int Joint Res Lab Quantum Funct Mat Henan, Zhengzhou 450001, Henan, Peoples R China
[2] Zhengzhou Univ, Ctr Clean Energy & Quantum Struct, Zhengzhou 450001, Henan, Peoples R China
[3] Luoyang Inst Sci & Technol, Dept Math & Phys, Luoyang 471023, Peoples R China
[4] Henan Univ Sci & Technol, Sch Phys & Engn, Luoyang 471023, Peoples R China
关键词:
First-principles;
Friction;
MoS2;
Strain;
AB-INITIO;
METAL DICHALCOGENIDES;
ELECTRONIC-PROPERTIES;
TRANSITION;
D O I:
10.1016/j.triboint.2014.02.013
中图分类号:
TH [机械、仪表工业];
学科分类号:
0802 ;
摘要:
The atomic-scale friction in MoS2 is investigated employing the density functional theory calculation including the dispersion correction (DFT-D). Energy corrugations and lateral frictional forces of the lamellar MoS2 are derived, suggesting that the in-plane compressive MoS2 exhibits lower friction than the tensile system. The reduced friction is attributed to a stronger coulombic repulsive interaction enabled by the transferred charge to the sliding interface. In-depth understanding of the relationship between friction and interfacial interaction shows that friction can be tuned in layered MoS2 by applying an in-plane strain to the sliding interface. (C) 2014 Elsevier Ltd. All rights reserved.
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页码:211 / 217
页数:7
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