4.5 Article

Vertical Nanowires Enhanced Spatial Resolution of X-Ray Imaging

期刊

IEEE PHOTONICS TECHNOLOGY LETTERS
卷 33, 期 2, 页码 73-76

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2020.3045110

关键词

X-ray image; ZnO nanowires; scintillator; hydrothermal method

资金

  1. National Natural Science Foundation of China [11705090, 11875166, 11435010]

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The study presents a high spatial resolution scintillation screen with a vertical ZnO nanowires structure that converts X-ray to UV-visible light. The well-distributed nanowires grown by the hydrothermal method act as a light guide to suppress lateral spreading, achieving sharp X-ray digital images. The best spatial resolution of 9.8 lp/mm was achieved for 2 μm thick ZnO nanowires under a 30 keV monoenergetic X-ray beam, demonstrating the potential of solution-growth vertical ZnO nanowires scintillation screen in providing high X-ray image quality with high resolution.
We designed a high spatial resolution scintillation screen with a vertical ZnO nanowires structure that converts X-ray to UV-visible light. These well-distributed vertical ZnO nanowires were grown by the hydrothermal method, which plays an important role as a light guide to suppress lateral spreading. Sharp and high X-ray digital images have been obtained from a cooled-CCD camera. The best spatial resolution of 9.8 lp/mm is achieved for 2 mu m thick ZnO nanowires under a 30 keV monoenergetic X-ray beam. We demonstrated that these solution-growth vertical ZnO nanowires scintillation screen can provide a high X-ray image with high spatial resolution.

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