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Updated: Nov 17, 2025

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Xiangyu Ou1, Xian Qin2, Bolong Huang3

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Researchers developed a novel X-ray imaging method using persistent radioluminescence from nanoscintillators, enabling flat-panel-free, 3D imaging with over 30 days of persistent light. This breakthrough advances high-resolution X-ray detection capabilities.

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Area of Science:

  • Materials Science
  • Medical Imaging
  • Condensed Matter Physics

Background:

  • Current X-ray detectors face challenges in imaging 3D objects due to limitations in fabricating flexible silicon photodetectors on curved surfaces.
  • Existing technologies struggle with large-area, flexible detector fabrication for diverse X-ray imaging applications.

Purpose of the Study:

  • To demonstrate a novel approach for flat-panel-free, high-resolution, 3D X-ray imaging.
  • To investigate ultralong-lived X-ray trapping mechanisms in nanoscintillators for persistent radioluminescence.

Main Methods:

  • Utilized solution-processable, lanthanide-doped nanoscintillators for X-ray energy conversion.
  • Employed quantum mechanical simulations to study defect formation and electronic structures.
  • Conducted experimental characterizations to analyze persistent radioluminescence and imaging capabilities.

Main Results:

  • Achieved persistent radioluminescence exceeding 30 days through slow electron hopping triggered by radiation-induced anionic migration.
  • Demonstrated X-ray luminescence extension imaging with resolution greater than 20 line pairs per millimetre.
  • Observed optical memory exceeding 15 days, indicating enduring X-ray energy storage.

Conclusions:

  • The findings offer insights into X-ray energy conversion mechanisms via persistent electron trapping.
  • This work presents a new paradigm for developing wearable X-ray detectors for various applications, including patient-centered radiography and advanced diagnostics.
  • The developed technology has potential implications for medical imaging, therapeutics guidance, high-energy physics, and artificial intelligence in radiology.