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Magnetic Resonance Imaging01:24

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Rapid Homogeneous Detection of Biological Assays Using Magnetic Modulation Biosensing System
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Published on: June 13, 2010

Wireless, magnetic-based sensors for biomedical applications.

Keat Ghee Ong1, Ee Lim Tan, Brandon Pereles

  • 1Department of Biomedical Engineering, Michigan Technological University, 1400 Townsend Drive, Houghton, MI 49931, USA. kgong@mtu.edu

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|December 8, 2009
PubMed
Summary

This study introduces two wireless magnetic sensors for biomedical use: magnetoelastic and magneto-harmonic sensors. These technologies offer remote, low-cost sensing for long-term or disposable applications, enhancing biomedical diagnostics.

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Area of Science:

  • Biomedical Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Wireless magnetic sensors are increasingly adopted in biomedicine due to their remote query capabilities.
  • Low cost and suitability for disposable applications make these sensors highly attractive.
  • Long-term implantable sensors benefit from wireless, non-invasive interrogation.

Purpose of the Study:

  • To describe the operating principles of two wireless magnetic sensors: magnetoelastic and magneto-harmonic sensors.
  • To highlight the biomedical applications of these emerging sensor technologies.
  • To provide an overview of their potential in remote diagnostics and monitoring.

Main Methods:

  • Magnetoelastic sensors utilize materials that resonate at frequencies proportional to surrounding mass or viscosity.
  • Magneto-harmonic sensors detect changes in higher-order magnetic harmonic fields.
  • Sensor design incorporates specific materials and configurations for target parameter detection.

Main Results:

  • Magnetoelastic sensors can detect chemical and biological targets via functional coatings.
  • Magneto-harmonic sensors enable remote measurement of parameters like pressure and stress by varying element separation.
  • Both sensor types demonstrate versatility for various biomedical sensing tasks.

Conclusions:

  • Wireless magnetic sensors, including magnetoelastic and magneto-harmonic types, offer promising solutions for biomedical sensing.
  • Their remote query nature and potential for low-cost, disposable designs facilitate advanced biomedical applications.
  • Further development and application of these sensors can significantly impact long-term health monitoring and diagnostics.