Title

Electrochemical Sensing in Paper-Based Microfluidic Devices

Author Info

Zhihong Nie, Harvard University
Christian A. Nijhuis, Harvard University
Jinlong Gong, Harvard University
Xin Chen, Harvard University
Alexander Kumachev, University of Toronto
Andres W. Martinez, Harvard UniversityFollow
Max Narovlyansky, Harvard University
George M. Whitesides, Harvard University

Recommended Citation

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.

The definitive version is available at https://doi.org/10.1039/B917150A.

Abstract

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.

Disciplines

Biochemistry | Chemistry

Copyright

2010 Royal Society of Chemistry.