Skip to main content
. 2016 Jan 27;7:10535. doi: 10.1038/ncomms10535

Figure 6. Electrochemical imaging of an anaerobically grown ΔphzH biofilm following 1 h of oxygenation.

Figure 6

(a) Electrochemical imaging, based on reductive SWV, of a ΔphzH biofilm, after 2 days of anaerobic development and after 1 h of subsequent exposure to O2. Pixel intensity is proportional to phenazine concentration. PCA is shown in green. Maximum error due to electrode variability is 28 μM for PCA. Images are 8 mm × 8 mm. (b) Locations of example square-wave voltammogram and cross-section in c,d, respectively. (c) Example square-wave voltammogram from a single electrode. (d) Example cross-section from the electrochemical image in a. (e) Electrochemical imaging, based on oxidative SWV, of the same ΔphzH biofilm shown in a. Pixel intensity is proportional to phenazine concentration. PCA is shown in green. Maximum error due to electrode variability is 74 μM for PCA. Images are 8 mm × 8 mm. (f) Locations of example square-wave voltammogram and cross-section in g,h, respectively. (g) Example square-wave voltammogram from a single electrode. (h) Example cross-section from the electrochemical image in e.