Fig. 3From: Study of Nanoscale Friction Behaviors of Graphene on Gold Substrates Using Molecular DynamicsThe variation of friction force and average friction force for different flake sizes. The typical friction force as a function of sliding distance for the 2.0 nm (N = 160 atoms) flake (a) and 10 nm (N = 3936 atoms) flake (b). c The average friction force per atom (Ffric/N) as a function of load per atom (L/N). Here, a0 (= 9.99 Å) is the lattice spacing of Au(111) along the sliding directionBack to article page