Basic structure and working mechanism of SM-SERS substrate (IMAGE)

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Basic structure and working mechanism of SM-SERS substrate

Caption

Figure 1. Basic structure and working mechanism of SM-SERS substrate. (a) Schematic diagram of rapid SM-SERS signal formation. (b) SEM image of SM-SERS substrate. (c) Optical image of sample under micro-Raman spectrometer. The highlighted region in the red box represents the area where gold nanoparticles combine with WS2 2D material. (d) Zeta potentials of gold nanoparticle colloid, RhB solution, R6G solution, and CV solution. e. Schematic diagram of gold nanoparticles being attracted toward positively charged molecular frameworks by electrostatic force after being dropped.

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Lihong Hong, Haiyao Yang, Zhi-Yuan Li

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