Development of potassium ion sensors using polypyrrole electrodes on a polyimide substrate

Vasuda Ramachandran; Hargsoon Yoon; Vijay K. Varadan

doi:10.1117/12.776834

26 March 2008 Development of potassium ion sensors using polypyrrole electrodes on a polyimide substrate

Vasuda Ramachandran, Hargsoon Yoon, Vijay K. Varadan

Proceedings Volume 6931, Nanosensors and Microsensors for Bio-Systems 2008; 69310H (2008) https://doi.org/10.1117/12.776834
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Myocardial Ischemia is a condition which affects millions of people in the U.S. It is known that a rise in levels of extracellular potassium indicates the onset of this condition. This presentation demonstrates the fabrication of a unique potassium sensing device which combines a conducting polymer, polypyrrole, with micro/nano fabrication and nanowire technology. We discuss the fabrication of gold/polypyrrole electrodes on a flexible polyimide substrate. Conducting polymers offer numerous advantages when it comes to ion sensing including increased stability in response while micro/nanofabrication aids in the overall miniaturization. The small size and flexibility makes this device suitable for future biomedical applications involving implantation. In this presentation, various electrode structures including nanowire electrodes ware investigated. Testing is conducted with an electrochemical analyzer where changes in open circuit potentials reflect changes in potassium ion concentration.

Citation Download Citation

Vasuda Ramachandran, Hargsoon Yoon, and Vijay K. Varadan "Development of potassium ion sensors using polypyrrole electrodes on a polyimide substrate", Proc. SPIE 6931, Nanosensors and Microsensors for Bio-Systems 2008, 69310H (26 March 2008); https://doi.org/10.1117/12.776834

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