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More Sensitive X-ray Imaging for Medicine and Industry

Improvements in the material that converts X-rays into light could allow a tenfold signal enhancement.

Researchers at MIT have shown how one could improve the efficiency of scintillators by at least tenfold by changing the material’s surface. This image shows a TEM grid on Scotch tape, with the right side showing the scene after it is corrected. Credit: Courtesy of the researchers, edited by MIT News.

David Chandler
Tue, 03/15/2022 - 12:02
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Scintillators are materials that emit light when bombarded with high-energy particles or X-rays. In medical or dental X-ray systems, they convert incoming X-ray radiation into visible light that can then be captured using film or photosensors. They’re also used for night-vision systems and for research, such as in particle detectors or electron microscopes.

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Researchers at the Massachusetts Institute of Technology have now shown how one could improve the efficiency of scintillators by at least tenfold, and perhaps even a hundredfold, by changing the material’s surface to create certain nanoscale configurations, such as arrays of wave-like ridges. While past attempts to develop more efficient scintillators have focused on finding new materials, the new approach could in principle work with any of the existing materials.

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