Research / 2020 / Article / Fig 1

Research Article

Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides

Figure 1

(a) Schematic for transferring WS2 monolayers onto a gold nanosieve by the PMMA-assisted transfer method; (b) AFM image of a WS2 monolayer with a height profile of ~0.7 nm. (c) Optical image of the Au-WS2 interface. The Au metasurface is fully covered by a triangular WS2 monolayer. (e, f) TPL and Raman spectra from a WS2 monolayer, respectively.