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Remote query measurement of pressure, fluid-flow velocity, and humidity using magnetoelastic thick-film sensorsFree-standing magnetoelastic thick-film sensors have a characteristic resonant frequency that can be determined by monitoring the magnetic flux emitted from the sensor in response to a time varying magnetic field. This property allows the sensors to be monitored remotely without the use of direct physical connections, such as wires, enabling measurement of environmental parameters from within sealed, opaque containers. In this work, we report on application of magnetoelastic sensors to measurement of atmospheric pressure, fluid-flow velocity, temperature, and mass load. Mass loading effects are demonstrated by fabrication of a remote query humidity sensor, made by coating the magnetoelastic thick film with a thin layer of solgel deposited Al2O3 that reversibly changes mass in response to humidity. c2000 Elsevier Science S.A. All rights reserved.
Document ID
20040088209
Document Type
Reprint (Version printed in journal)
Authors
Grimes, C. A. (The University of Kentucky Lexington, KY 40506-0046, United States)
Kouzoudis, D.
Date Acquired
August 21, 2013
Publication Date
September 1, 2000
Publication Information
Publication: Sensors and actuators. A, Physical
Volume: 84
Issue: 3
ISSN: 0924-4247
Subject Category
Instrumentation and Photography
Funding Number(s)
CONTRACT_GRANT: NAG5-4594
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Life Sciences Technologies
Non-NASA Center