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SEM image of a thin graphite and a FLG flake on substrate (I). The flake on the right side is 4 nm high and the left one is 15 nm.
(a) AFM image of graphene on substrate (III). The height is 1.6 nm. (b): Linecuts through substrate and a 14 nm thin graphite flake. The inset shows this flake. The -axis is stretched by a factor 3. The peak at is due to some layers pointing upward.
AFM images of (a) pristine substrate (I), (b) graphene on substrate (I) and (c) substrate (I) after lift-off. (d) Power spectral density of AFM images; the inset schematically drafts the situation. All scale bars: 100 nm.
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