Surface acoustic wave sensors for harsh environments

This work is performed in collaboration with the National Energy Technology Laboratory and is directed at developing wireless sensors for the harsh environment of combustion system exhaust. Temperatures can be in the 600- 1000 C range and above. There are very few options for wireless sensing in this temperature range. We are studying surface acoustic wave devices with oxygen-sensing metal oxide layers on the propagation path. The substrates used are langasite, a high-temperature piezoelectric material.

The basic sensing concept is illustrated in the figure below.

harshsaw

Below is a list of related publications. Some citations are linked to a draft of the paper; for the final version consult the journal or conference proceedings.

Conference papers

Journal articles

Keynote presentation