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Updated: Dec 24, 2025
06:17
Quantifying the Relative Thickness of Conductive Ferromagnetic Materials Using Detector Coil-Based Pulsed Eddy Current Sensors
Published on: January 16, 2020
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Magnetic Proximity Sensor Based on Magnetoelectric Composites and Printed Coils
Nélson Pereira1,2, Ana Catarina Lima1,3, Vitor Correia1,3
1Centre/Department of Physics, Minho University, 4710-057 Braga, Portugal.
Materials (Basel, Switzerland)
|April 11, 2020
Summary
This study presents novel magnetic proximity sensors using polyvinylidene fluoride (PVDF)/Metglas composites. These sensors offer high performance for Industry 4.0 applications, meeting key technological demands.
Area of Science:
- Materials Science
- Sensor Technology
- Physics
Background:
- The growing demand for Industry 4.0 and the Internet of Things drives interest in advanced magnetic sensors.
- Key requirements include optimized power consumption, reliability, flexibility, and low-temperature fabrication.
- Current sensor technologies face challenges in meeting these diverse demands.
Purpose of the Study:
- To develop and characterize novel magnetic proximity sensors.
- To utilize magnetoelectric (ME) polyvinylidene fluoride (PVDF)/Metglas composites for enhanced sensing capabilities.
- To address the technological challenges in modern sensor applications.
Main Methods:
- Fabrication of magnetic proximity sensors using PVDF/Metglas composites.
- Integration of an excitation-printed coil for sensor operation.
- Characterization of the magnetoelectric (ME) coefficient and sensor response.
Main Results:
- The sensor achieved a maximum resonant ME coefficient (α) of 50.2 Vcm-1 Oe-1.
- Demonstrated a highly linear AC response with R2 = 0.997.
- Achieved a maximum voltage output of 362 mV, indicating strong sensing performance.
Conclusions:
- The developed PVDF/Metglas magnetic proximity sensors meet critical Industry 4.0 requirements.
- The sensor's performance suggests suitability for diverse applications including aerospace, automotive, and machine safety.
- This work contributes to the advancement of efficient and reliable magnetic sensing technologies.
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