UNSW Sydney researchers have developed a chip-scale method using OLEDs to image magnetic fields, potentially transforming smartphones into portable quantum sensors. The technique is more scalable and doesn't require laser input, making the device smaller and mass-producible. The technology could be
An illustration of the spatially-resolved ODMR system for magnetic field imaging. Credit: Exciton Science
Sensing of magnetic fields has important applications in scientific research, industry, and medicine., this technique is able to function at microchip scale and – unlike other common approaches – does not require input from a laser.The majority of existing quantum sensing and magnetic field imaging equipment is relatively large and expensive, requiring either optical pumping or very low cryogenic temperatures.
Using OLEDs for EDMR and ODMR depends on correctly harnessing the spin behavior of electrons when they are in proximity to magnetic fields. “You could imagine using this technology being added to smartphones to help with remote medical diagnostics, or identifying defects in materials.”
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