Sensitivity Improvement of an Impedimetric Immunosensor Using Functionalized Iron Oxide Nanoparticles

Scheme 1

(a) System 1: schematic representation of the fabrication process of the multilayer immunosensor based on SAM. (b) System 2: schematic representation of the fabrication process of the multilayer immunosensor based on iron oxide nanoparticles. (c) Fab fragment biotinylated antibody.