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 https://doi.org/10.5757/ASCT.2017.26.3.47

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