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Fig. 1.
Fig. 1. (a) Optical image and (b) Raman spectrum of MoS2 flakes on a SiO2/Si substrate. In the Raman spectrum, the frequency difference between the main peaks is 19.3 cm−1, confirming the MoS2 flake is one monolayer thick.
Applied Science and Convergence Technology 2017;26:47~49
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