A Novel Label-Free Biosensor for Detection of HE4 in Urine Based on Localized Surface Plasmon Resonance and Protein G Directional Fixed

Figure 2

the silver nanoparticles characterization with SEM before and after modification. (a) characterization with SEM before modification. (b) characterization with SEM after modification (triangular silver nanosurfaces became obviously blunt with material binding).

(a)

(b)