An oxygen pressure sensor using surface acoustic wave devicesSurface acoustic wave (SAW) piezoelectric devices are finding widespread applications in many arenas, particularly in the area of chemical sensing. We have developed an oxygen pressure sensor based on coating a SAW device with an oxygen binding agent which can be tailored to provide variable sensitivity. The coating is prepared by dissolving an oxygen binding agent in a toluene solution of a copolymer which is then sprayed onto the surface of the SAW device. Experimental data shows the feasibility of tailoring sensors to measure the partial pressure of oxygen from 2.6 to 67 KPa (20 to 500 torr). Potential applications of this technology are discussed.
Leighty, Bradley D. (NASA Langley Research Center Hampton, VA, United States)
Upchurch, Billy T. (NASA Langley Research Center Hampton, VA, United States)
Oglesby, Donald M. (Old Dominion Univ. Norfolk, VA, United States)
August 16, 2013
January 1, 1993
Publication: In: International Instrumentation Symposium, 39th, Albuquerque, NM, May 2-6, 1993, Proceedings (A93-54351 24-35)