▎ 摘　　要

Understanding and controlling nanofriction are important in practical applications of nanotechnology. Our first-principles calculations reveal that interlayer nanofriction between two graphene layers can be tuned by applying an external electric field; the tuned magnitude of the coefficient of friction ranges from -30 to 30 %, which is attributed to the increased disparity of electronic structures between AA and AB stackings. This effect is significantly observed in boron- or nitrogen-doped systems compared with a pristine graphene system. Our findings present a feasible and precise strategy to tune the frictional properties of graphene systems.