Figure 1

Showing (a) a typical OCT cross-section slice from NR-D5, (b) the corresponding vertical scattering profile selected from the right-hand dashed region of (a), (c) the corresponding vertical scattering profile selected from the left-hand dashed region of (a). (d) shows a 50 × 50 µm image of the boxed area on the NR-D5 biofilm in (a), (e) a 10 × 10 µm area selected from the boxed bottom right corner of (d) and (f) a 3 × 3 µm image from the left-hand boxed area of (e).