Fig. 4
From: Graphene wrinkle effects on molecular resonance states
Effect of wrinkle height on molecular energy gaps. A trend is observed where the measured molecular energy gap (ΔE) of pentacene scales with the height of the wrinkles on which the molecule is adsorbed (schematically shown in inset, where the blue arrow indicates the position of the STM tip on top of pentacene adsorbed on a wrinkle). A sharp increase is seen in the conductance gap for molecules adsorbed on wrinkles that are taller than 2 nm (indicated by the red shaded region, with the S-shaped curve overlaid to guide the eye) beyond which the conductance gap is observed to reach its maximum plateau for wrinkles with height up to 3 nm (indicated by the blue shaded region)
