971380.fig.007
Figure 7: Illustration of process of convective assembly of protein-AgNP mixtures (A), photograph of lysozyme (a) and BSA (b) thin films (B), thin film images of BSA-AgNP film structures under 5x (C) and 50x objectives (D). SERS spectra of BSA-AgNP with decreasing concentrations, reprinted with permission from [108].