Electrowetting on screen printed paper based substrate

M. Yafia, H. Najjaran
University of British Columbia, CA

Keywords: electrowetting, microfluidics, screen printing


In this work, electrowetting on dielectric (EWOD) is performed on a paper based substrate. Electrode patterns are fabricated on a paper substrate using screen printing. Conventional photolithography fabrication techniques are replaced by screen printing conductive ink directly on the paper substrate instead of using subtractive and sacrificial etching processes. On the other hand, screen printing fabrication technique is an additive process that has several advantages over conventional photolithography techniques such as mass production capability, reduced production time, simplicity in fabrication steps and equipment used,. Moreover, Paper based substrates offer additional advantages such as material flexibility, low cost and disposability. The integration between printed electronics and microfluidics facilitates the production of the chips needed in microfluidics applications. This integration can have a great impact on the microfluidics research and commercialization as several applications has gained a lot of benefits when it became able to be manufactured by printed electronics techniques such as Radio Frequency Identification (RFID) applications.