<p>The spectrum shown here are for 6 different SERS nanoparticles types, or flavors: S493, S440, S482, S420, S481, and S421. The only difference in the construction of each flavor is the Raman active layer, which results in unique spectra. The units for the x-axis is given in Raman Shift, which can be calculated as follows: Raman Shift = 1/λ<sub>ex</sub> -1/λ<sub>R</sub>, where λ<sub>ex</sub> is the excitation wavelength and λ<sub>R</sub> is the Raman spectrum wavelength. The pump wavelength used in the system described in this manuscript is occurring at 785 nm. Therefore, a Raman Shift of zero corresponds to the pump wavelength.</p
