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. 2019 Sep 19;9(3):111. doi: 10.3390/bios9030111

Figure 5.

Figure 5

SERS spectra of para-mercaptobenzoic acid (p-MBA) (10−6 M) on PET/ITO/Ag platforms with various silver thicknesses. (a) Intensity of a band at 1075 cm−1 in relation to sputtered silver thickness. (b) SERS spectra were recorded using a 785 nm laser excitation (the laser power was below 5 mW) with three accumulations for four seconds.