A simple fabrication process for an efficient constriction-based dielectrophoretic continuous flow sorter

We present a dielectrophoretic continuous flow sorter using planar micro-electrodes coupled to a SU8 channel constriction. This novel design, relying on a simple fabrication process using SU8 dry film lamination to seal fluidic channels, enables a high sorting efficiency at low voltages. Our device was used to continuously sort 10μm and 5μm latex beads with less than 2% errors at flow speeds of 100μm/s. Simulation results are in accordance with experimental data.