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. 2017 Nov 1;7:14851. doi: 10.1038/s41598-017-14782-2

Figure 3.

Figure 3

In situ HCl test of G-SERS. Time-resolved surface-enhanced Raman spectra of (A) Ag/SiO2/Si and (B) G-SERS at 60 s interval in diluted HCl solution. The concentration of the HCl was 1 × 10−5 M. (C) Normalized intensities at 1600 cm−1 (blue) in (A) Ag/SiO2/Si and of G’ peak (red) in (B) G-SERS with respect to time after immersing in HCl.