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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
(a) SEM image of graphene film; (b) Histograms of lateral size of graphene nanosheets obtained from six 3 × 3 µm2 SEM images (~1800 flakes); The red dashed line represents a log-normal fit.