Fig. 2From: Metal oxide modified ZnO nanomaterials for biosensor applications(reproduced from Ref. [42] with permission, © 2017 Nature Publishing Group)Schematic illustration and electrochemical characterizations. a Schematic of non-enzymatic glucose sensor fabrication. b Nyquist semicircle plots showing EIS spectra. c CV response of electrodes in blank NaOH solution at scan rate of 100 mVs−1. d CVs response of electrode in glucose solution (scan rate, 100 mVs−1)Back to article page