Fig. 9
From: Study of Nanoscale Friction Behaviors of Graphene on Gold Substrates Using Molecular Dynamics
Contour maps of the potential energy for the Au(111), Au(110), and Au(001) surface at L = 120 nN are shown in a–c, respectively. The 5.8-nm square graphene flake is adopted. In a–c, a black solid line (y = 0) on the maps is used to show the sliding path of the flake. The graphene-gold interaction potential energy along the sliding path for the Au(111), Au(110), and Au(001) surface is also plotted in d–f, respectively. The unit of the potential energy is eV. The average height of the flake at L = 120 nN for the Au(111), Au(110), and Au(001) surface is 2.36 Å, 2.1 Å, and 2.17 Å, respectively