Switchable friction enabled by nanoscale self-assembly on graphene
Switchable friction enabled by nanoscale self-assembly on graphene
Abstract Graphene monolayers are known to display domains of anisotropic friction with twofold symmetry and anisotropy exceeding 200%. This anisotropy has been thought to originate from periodic nanoscale ripples in the graphene sheet, which enhance puckering around a sliding asperity to a degree determined by the sliding direction. Here we …