University of Twente develops vertical quantum sensor for nanoscale magnetic imaging
Researchers at the University of Twente have created a vertical quantum sensor that brings a SQUID directly onto a pyramid to image nanoscale magnetic patterns in quantum materials.
Standard sensors lose detail
Ordinary scanning SQUID microscopy places the sensor flat on a chip surface. This positioning leaves several micrometers of distance between the ring and the material being studied. Magnetic fields weaken quickly with distance, causing researchers to lose fine details in their measurements.
Pyramid design solves gap
The new device mounts the superconducting ring on top of a pyramid structure. This geometry allows the sensor to get right up to the material with nothing else in the way. Hans Hilgenkamp from the University of Twente states this setup lets them image magnetism at the scale where quantum materials operate.
Future research applications
The instrument is built within the Gravitation program QuMat for use by the university and its partners. It enables teams to measure quantum materials and develop new ones with unusual functionality. This technology supports the creation of future quantum computers and sensors that run on these specific materials.
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