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. 2019 Sep 23;5:48. doi: 10.1038/s41378-019-0090-1

Fig. 7. Raman scattering spectra of solutions with different concentrations.

Fig. 7

a Raman spectra of 10−8 M–10−12 M R6G solutions on the HS-SERS substrate with a pattern diameter of 100 μm. b Raman spectra of 10−13 M–10−16 M R6G solutions on the HS-SERS substrate with a pattern diameter of 100 μm. c Raman spectra of seven random points on the HS-SERS substrate with a pattern diameter of 300 μm with the 10−10 M R6G solution