Figure 2From: Nanostructured materials with biomimetic recognition abilities for chemical sensingAFM image of E. coli W strain imprints. The imprints are 1.5 to 2.5 μm large and about 100 nm deep, casted on the polyurethane substrate; scan scale, 7 × 5 μm; scan rate, 0.897 Hz.Back to article page