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. Author manuscript; available in PMC: 2014 Jan 1.
Published in final edited form as: Energy Environ Sci. 2012 Nov 15;6(2):595–607. doi: 10.1039/C2EE23394K

Figure 5. Diffusion mapping of S. oneidensis biofilms over time.

Figure 5

The top row shows two-dimensional De maps obtained using PFG-NMR, normalized against Daq, showing the middle 2 mm of the biofilm. Dark regions represent low De. The bottom row shows Drs profiles, derived by averaging the De of the middle 2 mm of the biofilm (shown in the maps). The top of the biofilm as determined by magnetic resonance imaging is indicated by the vertical lines. The panel on the lefts shows the S. oneidensis biofilm at 12 days, and the panel on the right shows it at 16 days.