Fig. 2: Laser exfoliating MoS2 thin films with nanometric thickness precisions.
From: Ultra-sensitive nanometric flat laser prints for binocular stereoscopic image
a The AFM image of laser thinned regions obtained at different laser doses. b The height change corresponding to the red dotted line in (a). The height of the steps is about 3 nm. c The variation of characteristic Raman spectra of MoS2 flakes as the increase of laser powers. d Extracted thickness change from Raman spectra at corresponding laser powers. e, f Reflection spectra of MoS2 thin films prepared on the Au substrate with different nanometric thicknesses. g, h Experimentally obtained reflection color palettes and color coordinate diagram through laser exfoliating at variant powers.
