By Topic

CMOS VLSI Potentiostat for Portable Environmental Sensing Applications

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Sungkil Hwang ; Department of Electrical and Computer Engineering, Tufts University, Medford, MA, USA ; Sameer Sonkusale

This paper reports an integrated CMOS potentiostat for detection of heavy metal ions in water and other solvents based on electrochemical sensing. The proposed potentiostat features a low-input impedance, high sensitivity, high gain and low power transimpedance amplifier front end, with programmable control of electrode potential, thus facilitating continuous bidirectional measurement of reduction-oxidation (redox) current in a potentiostat for cyclic voltammetry (CV) experiment. For proof of concept, we use the proposed integrated potentiostat to perform CV on a reference ferricyanide (K3Fe(CN)6) using external microelectrodes. Results compared with standard benchtop potentiostat confirm microelectrode behavior with accurate estimate of redox potential with varying redox currents proportional to the ferricyanide concentration.

Published in:

IEEE Sensors Journal  (Volume:10 ,  Issue: 4 )