Abstract
We have demonstrated magnetostrictive nanowire (NW) array-based pressure sensing that utilizes magneto-mechanical transduction in an NW array and electro-magnetic transduction in a giant magnetoresistance (GMR) magnetic field sensor. The pressure sensing is performed by pressing the vertically aligned multilayered Fe80Ga20/Cu NW array against the GMR surface causing NW deflections. Micromagnetic simulations were used to visualize changes in NW magnetization state and resulting stray fields with applied mechanical strain. This magneto-mechanical transduction was similar to that measured experimentally by the GMR sensors with applied pressure.
Original language | English (US) |
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Article number | 7833128 |
Pages (from-to) | 2015-2020 |
Number of pages | 6 |
Journal | IEEE Sensors Journal |
Volume | 17 |
Issue number | 7 |
DOIs | |
State | Published - Apr 1 2017 |
Bibliographical note
Publisher Copyright:© 2017 IEEE.
Keywords
- Fe-Ga
- magnetostriction
- nanowire
- pressure sensor