Magnetism-based sensors

Keat Ghee Ong; Mahaveer K. Jain; Casey Mungle; Stefan Schmidt; Craig A. Grimes

doi:10.1117/12.432928

9 July 2001 Magnetism-based sensors

Keat Ghee Ong, Mahaveer K. Jain, Casey Mungle, Stefan Schmidt, Craig A. Grimes

Proceedings Volume 4467, Complex Mediums II: Beyond Linear Isotropic Dielectrics; (2001) https://doi.org/10.1117/12.432928
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

This paper begins with an overview of nanostructured magnetoelastic materials, namely the amorphous ferromagnetic alloys, detailing how the material structure gives rise to unique magnetic and physical properties suitable for sensor applications, such as a high magnetostriction coefficient, high magnetoelastic coupling, as well as low coercive force and anisotropy field. With the correlation between the material structure and the magnetic and physical properties established, we then show how these unique properties are utilized for measuring multiple physical parameters such as stress/strain, liquid density and viscosity, fluid flow velocity, coating elasticity, ambient temperature, and chemical analyte concentrations including glucose, pH, carbon dioxide, and ammonia.

Citation Download Citation

Keat Ghee Ong, Mahaveer K. Jain, Casey Mungle, Stefan Schmidt, and Craig A. Grimes "Magnetism-based sensors", Proc. SPIE 4467, Complex Mediums II: Beyond Linear Isotropic Dielectrics, (9 July 2001); https://doi.org/10.1117/12.432928

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