Figure 3:

Effect of dielectric medium on the resonance position (experiment and simulation): (A) Experimental absorption spectra of the annealed 4 nm SNPG and the STG samples in the presence of air and 0.1 mmol/L BSA. Green arrow indicates the new peak that appears when the SNPG sample was placed in a higher RI. δ and β indicate the shift in dominant peak positions for the STG and SNPG samples, respectively, when placed in a higher RI media. (B) (Simulated) Effect of change in dielectric medium on the absorption spectra for the model SNPG (10 nm) showing the appearance of a second peak with higher RI.