A strange thing happened when a team of scientists folded a series of ultra-thin sheets of graphene in their laboratory in China.
The researchers from the Lanzhou Institute of Chemical Physics found that friction did not increase as the material got thicker. In fact, some of the thicker folds slid more easily.
The revelation was a bonus for the team – not only had they become the first to directly observe friction between solid materials at the quantum level, they had seen something that could…

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