, February 21 (Fujian daily) in the early morning of 18th Beijing time, nature, the world’s top academic journal, published online the cooperative research paper “high resolution X-ray luminescence extension imaging” (nature, 2021, 590, This research has greatly promoted the development of X-ray imaging technology. This is an important breakthrough in X-ray imaging technology after Professor Yang huanghao’s research team published the first paper in nature by Fuzhou University as a communication unit in 2018. It is the first time that Fuzhou University published a paper in the journal as the first author / first unit.

X-ray imaging technology has a wide and important application in medical diagnosis, safety inspection and industrial nondestructive testing. At present, most X-ray flat panel detectors need integrated thin film transistor array (TFT), amorphous silicon photoelectric conversion layer and scintillator. It is difficult to develop a flexible flat panel detector for 3D X-ray imaging of curved or irregular objects because of the huge technical challenges in manufacturing large area and flexible thin film transistor arrays and amorphous silicon photoelectric conversion layers.

In order to overcome this key technical bottleneck, Professor Yang huanghao and Professor Chen Qiushui, together with Professor Liu Xiaogang of National University of Singapore and Professor Huang Bolong of Hong Kong Polytechnic University, have found a class of high-performance X-ray luminescent nano scintillators, and proposed the mechanism of high-energy x-ray photon induced defect growth afterglow luminescence. The establishment of the luminescent mechanism has guiding significance for the exploration and synthesis of new halide long afterglow materials.

They continue to follow up research and found that rare earth nanocrystalline scintillators have the characteristics of easy size control, colorless and transparent, good dispersion and excellent afterglow performance. Therefore, the research team combined it with the flexible substrate to prepare a transparent, stretchable, electronic circuit free flexible X-ray imaging device, which realized flexible, high-resolution panoramic X-ray imaging, and its imaging spatial resolution has obvious advantages compared with the traditional flat panel detector.

This research result provides a new idea and way for the preparation of a new generation of flexible X-ray imaging equipment, showing great potential and application value in the fields of portable X-ray detector, breast imaging, dental panoramic imaging, industrial flaw detection, high energy physics and so on.

It is understood that China’s high-end X-ray imaging equipment and key components mainly rely on imports. The important achievements of Professor Yang huanghao’s team mark that China has entered the international advanced ranks in flexible X-ray imaging technology, and is expected to break through the technical limitations of foreign countries and promote the localization of high-end X-ray imaging equipment.