Figure 1.

Sorting by MFDEP. (a) Schematic of the cell sorting device and its electric connections. The device consists mainly of two parts; Pt electrodes and the fluidic network. The three fluidic inlets merge to form the central channel, with the electrode arrays in both sides; after the active element, the channel splits again, allowing to collect the purified samples in different outlets. (b) Magnified view of the central channel with the electrode arrays. We generally apply a low frequency field to both electrode arrays, focusing the particle stream toward the symmetry axis of the channel (F_focusing). To differentiate the particles, a third signal is added to one of the electrode arrays, designated as F_sorting. This leads to a different total force being exerted on different particles and they get focused to different equilibrium lines. The channel widening after the sorting array allows us to slow down the flow for image acquirement.