Figure 8.
Dielectrophoretic separation of active and dormant M. smegmatis. Microelectrodes were of the interdigitated oppositely castellated type with a characteristic size of 30 μm. The applied electrical signal was 120 kHz, 20 Vp.p. and the flow rate was 10 μl min−1. The suspending medium was a 0.5M sorbitol solution with a conductivity of 2 μS cm−1. (a) Distribution of cells from a mixed suspension in the electric field without fluid flow. (b) Same chamber 3 min after the fluid flow was started while keeping the electric field applied.