A microfluidic capacitance sensor for fluid discrimination and characterization
Abstract(#br)A microfluidic device with embedded capacitive sensing is proposed. The purpose of the device is fluid discrimination and characterization on the basis of the dielectric permittivity. The device is fabricated in a hybrid technology which innovatively combines PDMS (PolyDiMethylSiloxane) soft photolithography and screen printing techniques. A microchannel, realized in a PDMS layer, is placed in the fringe field of a sensing capacitor formed by electrodes screen-printed on a glass substrate.