Microfluidics without pumps: reinventing the T-sensor and H-filter in paper networks.
Conventional microfluidic devices typically require highly precise pumps or pneumatic control systems, which add considerable cost and the requirement for power. These restrictions have limited the adoption of microfluidic technologies for point-of-care applications. Paper networks provide an extremely low-cost and pumpless alternative to conventional microfluidic devices by generating fluid transport through capillarity. We revisit well-known microfluidic devices for hydrodynamic focusing, sized-based extraction of molecules from complex mixtures, micromixing, and dilution, and demonstrate that paper-based devices can replace their expensive conventional microfluidic counterparts.
Osborn
Jennifer L
JL
Department of Bioengineering, University of Washington, Box 355061, Seattle, WA 98195, USA. jlaj@u.washington.edu
Lutz
Barry
B
Fu
Elain
E
Kauffman
Peter
P
Stevens
Dean Y
DY
Yager
Paul
P
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017022:Flow Injection Analysis / Q000295:instrumentation*; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation*; D010209:Paper; D014159:Transducers