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Proceedings Paper

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

Paper Details

Date Published: 26 March 2008
PDF: 8 pages
Proc. SPIE 6931, Nanosensors and Microsensors for Bio-Systems 2008, 69310H (26 March 2008); doi: 10.1117/12.776834
Show Author Affiliations
Vasuda Ramachandran, Univ. of Arkansas (United States)
Hargsoon Yoon, Univ. of Arkansas (United States)
Vijay K. Varadan, Univ. of Arkansas (United States)

Published in SPIE Proceedings Vol. 6931:
Nanosensors and Microsensors for Bio-Systems 2008
Vijay K. Varadan, Editor(s)

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