Figure 5.
Optimization of sorting conditions. Lateral displacement of viable and non-viable E. coli at the outlet of the device (Sorting Device #1, DC = 1.24 µm), at different frequencies, voltages, and conductivities of the media: (a) Medium conductivity of 20 mS/m, (b) medium conductivity of 100 mS/m, and (c) medium conductivity of 500 mS/m. It can be seen that in general, σ = 100 mS/m gives the best separation among the three. Specifically, the optimized conditions for sorting are σ = 100 mS/m, f = 1.0 Hz, and V = 138 VPP.