Low-cost and rapid prototyping of microfluidic paper-based analytical devices by inkjet printing of permanent marker ink

We described a low-cost method for rapid prototyping of a microfluidic paper-based analytical device by inkjet printing of permanent marker ink. After the evaporation of ink solvent is printed onto the paper, hydrophobic resin remains and forms hydrophobic barriers for microfluidic flow and analysis. μPADS were fabricated by inkjet printing of permanent marker ink on filter paper, followed by evaporation of solvent.