Figure 9.
Dielectrophoretic separation of dead and dormant M. smegmatis. Microelectrodes were of the interdigitated oppositely castellated type with a characteristic size of 30 μm. The applied electric signal was 80 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 900 μS cm−1. (a) Chamber with a mixed suspension with the electric field applied but no fluid flow. (b) Chamber 3 min after the fluid flow was started; the electric field was still applied.