Dr. Woo Jin Chang, Associate Professor, Mechanical Engineering, has developed a menu of miniature electrochemical sensors that can detect—at low-cost and instantaneously—heavy metals, water acidity, and nutrients in drinking water and other fluids. Three Wisconsin companies have licensed the sensor and now Chang and his co-inventor are collaborating with a California-based company to commercialize it.
A graphene-based water sensor developed at the University of Wisconsin-Milwaukee outperforms current technologies for sensing speed, accuracy and sensitivity – exactly what’s needed to continuously monitor drinking water for miniscule traces of contaminants like lead. But the cost of mass-producing these tiny sensors using traditional methods is high.