Micro elements for interrogating magnetoelastic sensors

Cai Liang, Chinthaka Pasan Gooneratne, Jürgen Kosel, Leslie C. Mathison, Bryan Chin

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper reports a new approach for interrogating a magnetoelastic sensor's resonant frequency. Previously, the frequency of a magnetoelastic sensor was measured by using a large-scale solenoid coil of at least some millimeters both in diameter and length. Planar structures of straight-line and rectangular spiral coil are designed, fabricated and tested to interrogate the resonant frequency of a magnetoelastic sensor. A sensor of 4 mm length is measured to have a resonant frequency of 551 kHz in air. The ability to interrogate a magnetoelastic sensor with such microscale elements is a step towards the miniaturization of a magnetoelastic sensor system and integration of such a system in a microfluidics device. © 2011 IEEE.
Original languageEnglish (US)
Title of host publication2011 Fifth International Conference on Sensing Technology
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages4
ISBN (Print)9781457701672
StatePublished - Nov 2011


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