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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...
In article number 1701474, Kaihui Liu, Xianlong Wei, and co‐workers demonstrate a test to measure friction between MoS2 layers based on the sliding between them. This in situ scanning electron microscopy technique provides the first direct experimental evidence for superlubricity between atomic layers of hexagonal MoS2.
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