Electrochemical Sensing in Paper-Based Microfluidic Devices
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.
Zhihong Nie, Christian A. Nijhuis, Jinlong Gong, Xin Chen, Alexander Kumachev, Andres W. Martinez, Max Narovlyansky, and George M. Whitesides. "Electrochemical Sensing in Paper-Based Microfluidic Devices" Lab on a Chip 10.4 (2010): 477-483.
Available at: http://works.bepress.com/awmartin/5