|About this Abstract
||MS&T23: Materials Science & Technology
||Advanced Materials for Harsh Environments
||Ceramic Far-Field Passive Wireless Sensors for High Temperature Measurement
||Kevin Tennant, Brian Jordan, Noah Strader, Daryl Reynolds, Mark Jerabek, Jay Wilhelm, Edward Sabolsky
|On-Site Speaker (Planned)
Providing accurate real-time temperature sensing in harsh environments is critical for many operations in industrial and energy conversion applications; there is a need to develop a durable solid-state sensor for these applications. Electroceramic materials (such as semiconducting oxides) possess properties such as adequate electrical conductivity, with the additional benefit of high temperature and chemical stability. The objective of this work is to incorporate refractory oxide materials into a passive wireless sensor architecture for temperature and health monitoring in harsh environments. This study compared the use of silver and various semiconducting oxides printed on alumina in patch antenna sensor design, and these sensors were evaluated up to 1000 ℃ in air. The sensors were analyzed at set interrogating distances up to 75 cm using ultra-wideband slot antennas to collect the scattering parameters. Sensors that were evaluated displayed an average resolution of 40 kHz/℃ which decreased with longer interrogating distances.