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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 (http://creativecommons.org/licenses/by/4.0/).
(a) Atomic force microscopy (AFM) topography of MoS2 film; (b) AFM topography of triangular MoS2; (c) AFM height profile of triangular MoS2 (blue lines represent the average height of triangular MoS2 under different position).