Commercial Gold Nanoparticles on Untreated Aluminum Foil: Versatile, Sensitive, and Cost-Effective SERS Substrate

Figure 1

((a) and (c)) Raman spectra from NBT and CV solutions of different concentrations drop-casted on 60 nm AuNP@Al foil substrate. Spectra are taken with 633 nm laser excitation. ((b) and (d)) Plots of blank adjusted Raman signal versus logarithm of NBT and CV concentration (M), respectively. Signals are obtained in SERS assay on 60 nm AuNPs at various substrates.

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