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Related Concept Videos

Super-resolution Fluorescence Microscopy01:37

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.
X-ray Imaging01:24

X-ray Imaging

German physicist Wilhelm Röntgen (1845–1923) was experimenting with electrical current when he discovered that a mysterious and invisible "ray" would pass through his flesh but leave an outline of his bones on a screen coated with a metal compound. In 1895, Röntgen made the first durable record of the internal parts of a living human: an "X-ray" image (as it came to be called) of his wife’s hand. Scientists worldwide quickly began their own experiments with X-rays, and by 1900, X-ray was widely...

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Reversible X-Ray Memory Imaging for Cadmium-Based Perovskites: Deep Trap-Driven Radioluminescence Enhancement.

Dandan Yang1, Jingjing Xu1, Ling Li1

  • 1School of Chemistry and Materials, Jiangsu Provincial Key Laboratory of Green & Functional Materials and Environmental Chemistry, Yangzhou University, Yangzhou, China.

Advanced Materials (Deerfield Beach, Fla.)
|January 3, 2026
PubMed
Summary

Researchers developed a reversible X-ray memory imaging technique using CsCdCl3:Pb perovskite for multi-level information encryption. This novel approach enhances security through integrated blue emission, persistent luminescence, and photochromic behavior.

Keywords:
deep trapmulti‐level information encryptionphotochromic behaviorradioluminescence enhancementreversible X‐ray memory imaging

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Information Security

Background:

  • X-ray imaging is crucial for information encryption and anti-counterfeiting.
  • Challenges exist in ensuring information security under multi-level encryption.

Purpose of the Study:

  • To develop a reversible X-ray memory imaging technique for multi-level information encryption.
  • To integrate multiple stimulus response modes into a single material.

Main Methods:

  • Utilized CsCdCl3:Pb perovskite for X-ray memory imaging.
  • Integrated blue emission, persistent luminescence, and photochromic behavior.
  • Investigated X-ray irradiation time effects on radioluminescence (RL) intensity and photochromic deepening.

Main Results:

  • Achieved multi-level information encryption via four stimulus response modes.
  • Observed a two-fold enhancement in RL intensity with increasing X-ray irradiation time due to a new deep trap (0.79 eV).
  • Demonstrated X-ray memory imaging based on RL enhancement differences.

Conclusions:

  • The developed CsCdCl3:Pb perovskite exhibits reversible X-ray memory imaging with fast response, rapid erasure, fatigue resistance, and long-term stability.
  • Presents an effective strategy for designing multi-mode stimulus response perovskite materials.
  • Opens new avenues for advanced multi-level information security.