| Title | Superlubricity between MoS2 Monolayers |
| Authors | Li, He Wang, Jinhuan Gao, Song Chen, Qing Peng, Lianmao Liu, Kaihui Wei, Xianlong |
| Affiliation | Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China. Peking Univ, Dept Elect, Beijing 100871, Peoples R China. Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China. Wei, XL (reprint author), Peking Univ, Dept Elect, Beijing 100871, Peoples R China. Liu, KH (reprint author), Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. |
| Keywords | 2D materials friction properties in situ electron microscopy MoS2 superlubricity MOLYBDENUM-DISULFIDE FRICTION NANOTUBES EVOLUTION HETEROSTRUCTURES ANISOTROPY GRAPHITE ENERGY LAYERS |
| Issue Date | 2017 |
| Publisher | ADVANCED MATERIALS |
| Citation | ADVANCED MATERIALS.2017,29(27). |
| Abstract | The ultralow friction between atomic layers of hexagonal MoS2, an important solid lubricant and additive of lubricating oil, is thought to be responsible for its excellent lubricating performances. However, the quantitative frictional properties between MoS2 atomic layers have not been directly tested in experiments due to the lack of conventional tools to characterize the frictional properties between 2D atomic layers. Herein, a versatile method for studying the frictional properties between atomic-layered materials is developed by combining the in situ scanning electron microscope technique with a Si nanowire force sensor, and the friction tests on the sliding between atomic-layered materials down to monolayers are reported. The friction tests on the sliding between incommensurate MoS2 monolayers give a friction coefficient of approximate to 10(-4) in the regime of superlubricity. The results provide the first direct experimental evidence for superlubricity between MoS2 atomic layers and open a new route to investigate frictional properties of broad 2D materials. |
| URI | http://hdl.handle.net/20.500.11897/472084 |
| ISSN | 0935-9648 |
| DOI | 10.1002/adma.201701474 |
| Indexed | SCI(E) |
| Appears in Collections: | 物理学院 纳米器件物理与化学教育部重点实验室 信息科学技术学院 人工微结构和介观物理国家重点实验室 |
