Superlubricity of molybdenum disulfide film

Superlubricity is an ideal state with zero contact friction between two frictional interfaces. It has become a hot research topic for many scientists in the past 20 years, and the field spans the complex hot research directions of physics, chemistry, mechanics, and materials. The concept of superlubricity was introduced in 1990, and the understanding of the process of realizing superlubricity is vital for controlling the tribological properties of materials and promoting the development of tribology. This review focuses on the fundamental properties of molybdenum disulfide (MoS2) films and the influence of the environment on affecting MoS2 films. As a result, some methods for realizing superlubricity by MoS2 films are proposed. The key to achieving superlubricity with MoS2 is summarized. Finally, an outlook on the application of MoS2 films is given.