Sensitivity Improvement of an Impedimetric Immunosensor Using Functionalized Iron Oxide Nanoparticles
Figure 3
Nyquist diagram (−Im() versus Re()) at −400 mV versus SCE in PBS solution 10 mM pH 7.4, obtained for the non-Faradic impedance measurement corresponding to (a) bare gold electrode and (b) self-assembled monolayer functionalized gold electrode.