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Related Experiment Videos

The UT 19-channel DC SQUID based neuromagnetometer.

H J ter Brake1, J Flokstra, W Jaszczuk

  • 1University of Twente, Faculty of Applied Physics, Enschede, The Netherlands.

Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Fur Medizinische Physik and the European Federation of Organisations for Medical Physics
|January 1, 1991
PubMed
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A new 19-channel DC SQUID neuromagnetometer was developed at the University of Twente. This system features novel niobium wire bonding and external feedback for reduced crosstalk, enhancing magnetic field detection capabilities.

Area of Science:

  • Physics
  • Biomedical Engineering
  • Materials Science

Background:

  • Neuromagnetometry requires sensitive magnetic field detection.
  • Superconducting Quantum Interference Devices (SQUIDs) are crucial for this.

Purpose of the Study:

  • To describe the development of a 19-channel DC SQUID-based neuromagnetometer.
  • To detail novel fabrication and integration techniques for improved performance.

Main Methods:

  • Construction of a 19-channel system using planar DC SQUIDs and first-order gradiometers.
  • Development of a niobium wire bonding technique for SQUID integration.
  • Implementation of compartmentalized SQUID modules and external feedback electronics.

Main Results:

Related Experiment Videos

  • Successful fabrication of planar DC SQUIDs using Nb/Al, AlO kappa/Nb technology.
  • Demonstration of a novel niobium wire bonding method.
  • Integration of external feedback to minimize crosstalk between gradiometers.

Conclusions:

  • The developed 19-channel DC SQUID neuromagnetometer system is functional.
  • The novel bonding and feedback techniques contribute to improved system performance and reduced crosstalk.