Fig. 6
From: Online Determination of Graphene Lattice Orientation Through Lateral Forces
Lattice orientation identification on a monolayer graphene. a Optical image of the graphene. The dot line indicates the graphene sheet. Blue scale bar: 200 μm. b The topographic image of the graphene sheet. c Spatial frequency power spectrum from a single friction scanning line. The inset is a normal friction image from which lattice structure cannot be identified. d “Atomic image” of the spot indicated by a black rectangle in b