Fig. 4From: Nanoscale Au-ZnO Heterostructure Developed by Atomic Layer Deposition Towards Amperometric H2O2 Detectiona Raman spectra at 25 °C for ZnO powder and ALD-developed ZnO with thickness 1.3 nm. b Nyquist plots of the blank substrate and ZnO with 5 mM K4Fe(CN)6 solutionBack to article page