Figure 2

CV (A) and EIS (B) of bare GCE (a), Fe3O4/GCE (b), AuNPs@ Fe3O4/GCE (c), apt-AuNPs@ Fe3O4/GCE (d), NIP-apt-AuNPs@ Fe3O4/GCE (e), MIP-apt-AuNPs@ Fe3O4/GCE (f), and MIP-apt-AuNPs@ Fe3O4/GCE after rebinding of S. aureus (g). Conditions are 5.0 mM Fe(CN)63-/4- dissolved in 0.1 M KCl.