Magnetoelastic sensors in combination with nanometer-scale honeycombed thin film ceramic TiO2 for remote query measurement of humidity.
Ribbonlike magnetoelastic sensors can be considered the magnetic analog of an acoustic bell; in response to an externally applied magnetic field impulse the sensors emit magnetic flux with a characteristic resonant frequency. The magnetic flux can be detected external to the test area using a pick-up coil, enabling query remote monitoring of the sensor. The characteristic resonant frequency of a magnetoelastic sensor changes in response to mass loads. [L.D. Landau and E. M. Lifshitz, Theory of Elasticity, 3rd ed. (Pergamon, New York, 1986). p. 100].Therefore, remote query chemical sensors can be fabricated by combining the magnetoelastic sensors with a mass changing, chemically responsive layer. In this work magnetoelastic sensors are coated with humidity-sensitive thin films of ceramic, nanodimensionally porous TiO2 to make remote query humidity sensors.
Grimes
C A
CA
Department of Electrical Engineering, The University of Kentucky, Lexington, Kentucky 40506, USA. grimes@engr.uky.edu
Kouzoudis
D
D
Dickey
E C
EC
Qian
D
D
Anderson
M A
MA
Shahidain
R
R
Lindsey
M
M
Green
L
L
D015374:Biosensing Techniques / Q000295:instrumentation*; D002516:Ceramics; D004548:Elasticity; D004784:Environmental Monitoring / Q000295:instrumentation*; D006813:Humidity; D008280:Magnetics; D014025:Titanium / Q000737:chemistry*
C009495:titanium dioxide; D014025:Titanium