Preprint version. Published in Lab on a Chip, Volume 10, Issue 4, January 1, 2010, pages 477-483.
NOTE: At the time of publication, the author Andres W. Martinez was not yet affiliated with Cal Poly.
This paper describes the fabrication and the performance of microfluidic paper-based electrochemical sensing devices (we call the microfluidic paper-based electrochemical devices, μPEDs). The μPEDs comprise paper-based microfluidic channels patterned by photolithography or wax printing, and electrodes screen-printed from conducting inks (e.g., carbon or Ag/AgCl). We demonstrated that the μPEDs are capable of quantifying the concentrations of various analytes (e.g., heavy-metal ions and glucose) in aqueous solutions. This low-cost analytical device should be useful for applications in public health, environmental monitoring, and the developing world.
Biochemistry | Chemistry