Figure 7: (a) Typical shift in the resonance peaks upon adsorption of fibrinogen (black line: before fibrinogen adsorption, blue line: after fibrinogen adsorption) for substrates composed of SiO2 nanosphere array with Au seeding only. (b) shifts of the resonance position in the wavelength range from 400-600 nm and 600-900 nm upon fibrinogen adsorption for different plating times as indicated.