Fig. 2
From: Graphene wrinkle effects on molecular resonance states
Pentacene superstructures on wrinkle and flat-area graphene. a Large-area AFM image of pentacene molecular layer spray-deposited onto the CVD graphene surface from liquid-phase. The AFM data shows the formation of chain-like (regions marked in yellow) and island-type (regions marked in blue) pentacene structures within a single graphene grain and areas where pentacene molecular layers are missing (regions marked in green) (scale bar: 1 µm). b, c Spatially magnified AFM amplitude and height data of the chain-like and the island-type pentacene structures. (scale bar: 500 nm for AFM data (b, c). d Schematic detailing the differences in measurements for root-mean-square (Rq) and average (Ra) surface roughness. e Spatially magnified three-dimensionally represented AFM topography over which Rq values are measured for pentacene adsorbed on graphene wrinkle (indicated by blue arrow) and on flat-graphene (indicated by yellow arrow) of (2.3 ± 0.5) nm and (0.7 ± 0.2) nm, respectively. (Scan size for e: 1.1 × 0.8 µm2)
