Transient and steady-state responses of thick-film oxygen sensors

✍ Scribed by Y.Z. Lam; J.K. Atkinson

• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 485 KB
• Volume: 34
• Category: Article
• ISSN: 0263-2241
• DOI: 10.1016/j.measurement.2003.08.011

✦ Synopsis

Disposable transcutaneous oxygen sensors have been designed and implemented employing screen-printing technology. The device is based on the working principle of amperometry and implemented with electrodes, electrolyte and an overlying membrane. A three-electrode configuration has been adopted with gold working and counter electrodes as well as a silver/silver chloride reference electrode. This paper focuses on the transient and steady state responses of the sensors obtained from a one-dimensional theoretical diffusion model, the results of which were compared to the experimental measurements. The surface contour and thickness of each layer was determined by analyzing the sensor using optical methods. The investigations have validated the effectiveness of using the theoretical model to perform preliminary response analysis. Furthermore, this method proves to be advantageous for the study of materials by reducing the development time and cost for future sensor designs.