Figure 4 | Scientific Reports

Figure 4

From: Mechanism in External Field-mediated Trapping of Bacteria Sensitive to Nanoscale Surface Chemical Structure

Figure 4

Schematic images of (a) electrodes and electric field, and of (b) bacterial imprinting with target bacterium (Complementary bacterium A and mismatched bacterium B. Surface chemical structures (SCS) were assumed to be present on each bacterium, and molecular recognition sites (MRS) were assumed to be present in the OPPy film. SCS were modelled with red spheres of 10 nm diameter, and MRS were assumed to be in a hole (bacterial cavity). (c) 〈i〉 Spatial distribution of electric field around ring electrode and disk electrode, and 〈ii〉 the enlarged figure near the center of disk electrode (enclosed with white dotted square). The electrical potential difference between the center of disk electrode and the ring electrode (ΔV) was set to 1 V, where the electric field is proportional to ΔV and maintain the spatial distribution. (d) 〈i〉–〈iii〉 Numerically averaged total binding energy during 0.5 × 105–1.0 × 105 steps in dynamic Monte Carlo simulation was plotted as a function of ΔV for each value of K rec. Sample average was also evaluated after 100 trials.

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