Fabrication of microfluidic paper-based analytical devices by filtration-assisted screen printing

Filtration-assisted screen printing (FASP) is developed to fabricate the microfluidic paper-based analytical devices (μPAD). The polymer solution is filtrated through the patterned filter paper where the polymer is retained inside the filter paper at the designated locations to form the channel walls. The μPAD fabricated by FASP technique can be obtained as fast as in approximately 1 min.109