Fig. 6: Mechanical strength of monolayer Zn-1 transferred to pitted 120 nm layer of SiO2 on Si.
From: Porphene and porphite as porphyrin analogs of graphene and graphite
a Optical microscope image. b Enlarged area shown in red box in (a). c Tapping-mode AFM image of area in red box in (b). d Phase image of (c). e Optical microscope image of collapsed film over pit (white and brown color) and covered hydrated pit (blue with dark ring). f AFM image of blue-colored covered pit in (e). g Height profile across the step transition between SiO2 bare and covered with film found in the lower left corner of (c) and (d). h Raman spectrum of Zn-1 on multilayer coated BaF2 (red), over a covered blister (black), and over a hydrated pit (blue) shown in (c–e). i AFM profiles for covered hydrated pit (red) shown in (e, f) and uncovered pit (black).
