Fig. 10From: Study of Nanoscale Friction Behaviors of Graphene on Gold Substrates Using Molecular DynamicsFriction force as a function of sliding distance at various normal loads (L) for the friction process without the movement constraint of graphene in the y direction. The flake has a square shape with a size of 5.8 nm. Here, a0 (= 9.99 Å) is the lattice spacing of Au(111) along the sliding directionBack to article page