Figure 2
From: Laser Thinning and Patterning of MoS2 with Layer-by-Layer Precision
Achieving monolayer, bilayer, and trilayer MoS2 films. (a) Monolayer, with laser power of 2.5 mW and exposure time of 0.4 s at each pixel. (b) Bilayer, with laser power of 1.8 mW and exposure time of 0.4 s at each pixel. (c) Trilayer, with laser power of 2.5 mW and exposure time of 0.2 s at each pixel. The upper-left insets are optical images before laser thinning and the upper-right insets after laser thinning. The red dots denote the position where Raman spectra are collected. The Raman spectra are used to monitor the layer thickness.
