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. 2019 Jan 11;9(3):1517–1525. doi: 10.1039/c8ra08462a

Fig. 7. Reproducibility of the SERS intensities for significant modes of MB (5 nM – blue colour), PA (5 μM – green colour) and AN (5 μM – orange colour) recorded at 10 different spots on Ag–Cu NPs SERS substrate. The watermark shows the estimated RSD values.

Fig. 7