Woo-Jin Chang

Title: Woo-Jin Chang: Innovator in Contaminant Detection Technologies

Introduction

Woo-Jin Chang is a notable inventor based in Whitefish Bay, WI (US). He has made significant contributions to the field of contaminant detection through his innovative patents. With a total of 2 patents, Chang's work focuses on advanced sensing technologies that have practical applications in environmental monitoring.

Latest Patents

Chang's latest patents include "Composition, electrode, and fabrication method for phosphate sensing" and "Contaminant detection device and method." The first patent describes a composition that consists of a first component selected from cobalt oxide nanoparticles, tin (IV) chloride, diphenyl tin dichloride, and ammonium molybdate. The second component includes graphene oxide or reduced graphene oxide, while the third component comprises pyrrole or polypyrrole. This innovative composition is designed to enhance phosphate sensing capabilities.

The second patent outlines a device for measuring pH levels and contaminant concentration. This device features an electrode assembly that is electrically coupled to a control unit. The assembly includes a reference electrode, a working electrode, and a counter electrode. The working electrode is modified with a cysteine functionalized graphene oxide and polypyrrole nanocomposite. The control unit applies a complex signal to the working electrode to adhere and strip contaminant ions from fluid samples, allowing for accurate measurement of contaminant ion concentration and pH levels.

Career Highlights

Woo-Jin Chang is associated with the UWM Research Foundation, Inc., where he continues to develop innovative technologies. His work has garnered attention for its potential impact on environmental monitoring and safety.

Collaborations

Chang has collaborated with notable colleagues, including Sundaram Gunasekaran and Jiang Yang, to advance his research and development efforts.

Conclusion

Woo-Jin Chang's contributions to contaminant detection technologies highlight his innovative spirit and dedication to improving environmental safety. His patents reflect a commitment to developing advanced solutions for real-world challenges.