Figure 3.

Impedance spectrum of various electrodes in 5.0 mM K3Fe(CN)6/K4Fe(CN)6 (1:1) containing 0.1 M KCl. Bare electrode (curve a), ss-DNA/GR modified electrode (curve b), PtAuNP/ss-DNA/GR modified electrode (curve c), and GOD/PtAuNP/ss-DNA/GR modified electrode (curve d).

Leng et al. Nanoscale Research Letters 2014 9:99   doi:10.1186/1556-276X-9-99
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