Magnetoelastic sensors in combination with nanometer-scale honeycombed thin film ceramic TiO2 for remote query measurement of humidity.
| Autor: | Grimes CA; Department of Electrical Engineering, The University of Kentucky, Lexington, Kentucky 40506, USA. grimes@engr.uky.edu, Kouzoudis D, Dickey EC, Qian D, Anderson MA, Shahidain R, Lindsey M, Green L |
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| Jazyk: | angličtina |
| Zdroj: | Journal of applied physics [J Appl Phys] 2000 May 01; Vol. 87 (9 Pt 2), pp. 5341-3. |
| DOI: | 10.1063/1.373341 |
| Abstrakt: | 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. (c2000 American Institute of Physics.) |
| Databáze: | MEDLINE |
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