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X-ray Imaging

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...

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High Spatial Resolution Chemical Imaging of Implant-Associated Infections with X-ray Excited Luminescence Chemical Imaging Through Tissue

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Dual-Energy X-ray Imaging Enabled by Passivated Bilayer Copper-Based Halide Scintillators.

Yaoming Zhu¹, Chengjun Liu^1,2, Yuwei Li¹

¹School of Electronic Science and Engineering, Southeast University, Nanjing 210000, China.

The Journal of Physical Chemistry Letters

|March 11, 2026

Summary

Researchers developed a novel bilayer scintillator using copper halide nanocrystals for improved X-ray imaging. This new material enhances light output and stability, paving the way for advanced medical diagnostics and security screening.

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Area of Science:

Materials Science
Nanotechnology
Medical Imaging

Background:

Conventional X-ray imaging scintillators face challenges with low light output and poor stability.
Applications span medical diagnostics, security screening, and industrial inspection.

Purpose of the Study:

To develop a novel bilayer scintillator with enhanced performance for X-ray imaging.
To improve light output efficiency and operational stability compared to existing scintillators.

Main Methods:

Fabrication of a bilayer scintillator using Cs3Cu2Cl5/Cs3Cu2I5 copper halide nanocrystals.
Optimization of copper halide nanocrystal passivation with ammonium halides.
Utilizing energy-dependent attenuation contrast for dual-energy X-ray imaging.

Main Results:

Achieved a significant increase in photoluminescence quantum yield from 41.85% to 66.18% after optimization.
Demonstrated improved performance in X-ray imaging applications.
Confirmed exceptional stability under prolonged X-ray irradiation due to all-inorganic composition.

Conclusions:

The novel bilayer copper halide nanocrystal scintillator offers superior performance and stability for X-ray imaging.
This advancement presents a cost-effective approach for next-generation X-ray imaging technologies.
The developed scintillator shows promise for enhanced medical diagnostics and security screening.