Fabrication method of based-paraffin reconfigurable microfluidic chips using liquid dielectrophoresis and electrowetting transductions

A new and original concept aiming at rapid fabrication of continuous microfluidic chips with a channel-based reconfigurable and programmable geometry is reported in this paper. Interfaces between DI water and liquid paraffin-wax are precisely controlled using electromechanical forces onto an array of electrodes, similar to classical digital microfluidic platforms. As the liquid-liquid interfaces define the targeted geometry, the paraffin is solidified by decreasing the chip temperature using an integrated thermoelectric cooler. Then, the paraffin channel-based chip is used for in-flow continuous microfluidic experiments. First results describing the whole concept are shown with typical fluidic geometries.