Fig. 5From: Study of Nanoscale Friction Behaviors of Graphene on Gold Substrates Using Molecular DynamicsThe friction force vs sliding distance of the 5.8 nm square flake at L = 240 nN for different rotation angles (θ = 0°, 15°, 30°, 45°, 60°, 90°). a–f correspond to the rotation angle 0°~90°, respectively. Here, a0 (= 9.99 Å) is the lattice spacing of Au(111) along the sliding directionBack to article page