Effect of Different Basic Weight of Paper on Microfluidic Devices Fabricated by UV InkJet Printing

摘要

The paper studied effect of different basic weight of paper and width of hydrophilic channel on microfluidic devices fabricated by UV inkjet printing. Then, we made 4 different basic weight of paper and tested free diffusion length of liquid on paper that we initially made. Next, we designed a pattern which contains 4 different width of hydrophilic channels, the pattern was printed on paper through Mimaki UV inkjet printer. Through the test results and comparison we could find an optimal condition. The final results were as follows: printing time of ink layer in hydrophobic area is in proportion to the basic weight of paper in a certain range except that printing over 4 layers, the optimal channel width is 2 mm in the condition of ensuring that liquid is normally spreading.