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Frequency Mixing Magnetic Detection Scanner for Imaging Magnetic Particles in Planar Samples
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40 Tesla miniature magnets.

Chukun Gao1,2, Pin-Hui Chen1,2, Nicholas Alaniva1

  • 1Department of Chemistry and Applied Biosciences, Eidgenössische Technische Hochschule Zürich, Zürich 8049, Switzerland.

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|March 11, 2026
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This summary is machine-generated.

Researchers developed compact, low-power superconducting magnets achieving high magnetic fields. These devices, using high-temperature superconductors (HTS), enable accessible high-field Nuclear Magnetic Resonance (NMR) and other scientific applications.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Applied Superconductivity

Background:

  • Ultrahigh magnetic fields are crucial for scientific advancement.
  • Traditional high-field magnets (above 40 tesla) are large, power-intensive resistive systems.

Purpose of the Study:

  • To demonstrate compact, low-power superconducting magnets for high magnetic fields.
  • To explore the potential of all-high-temperature superconductor (HTS) magnets for accessible high-field applications.

Main Methods:

  • Fabrication of compact all-HTS magnets with 2 and 4 pancake coils.
  • Utilized specialized winding techniques for small-diameter HTS tape.
  • Achieved high current densities (up to 2257 A/mm²) in small bore magnets (3.1 mm).
  • Conducted Nuclear Magnetic Resonance (NMR) experiments for calibration.

Main Results:

  • Demonstrated peak magnetic fields of 38 and 42 tesla.
  • Magnets are palm-sized and consume less than 1 watt of power.
  • Successfully performed NMR experiments within the 3 mm bore.

Conclusions:

  • Compact all-HTS magnets offer a low-power, accessible solution for generating ultrahigh magnetic fields.
  • These magnets have significant potential for widespread adoption in high-field NMR and other scientific fields.