Figure 4From: Gas sensing properties of conducting polymer/Au-loaded ZnO nanoparticle composite materials at room temperatureFE-SEM images. (a) P3HT. (b-d) P3HT:1.00 mol% Au/ZnO NPs sensing films with the mixing ratios of 3:1, 2:1, and 1:2, respectively, on an Al2O3 substrate with interdigitated Au electrodes.Back to article page