Integrated Multifunctional Platform with X-ray and Near-Infrared Driven Photochromic Behavior for Reversible Quad-Mode Optical Imaging
Rongyi Kuang, Huiwang Lian, Meng Gao, Yunfei Zhu, Simin Gu, L. Shen, Xiaofeng Lin, Lin Huang, Chong‐Geng Ma, A. Suchocki, Yaroslav Zhydachevskyy, Bo‐Mei Liu, Jing Wang
Abstract
Noninvasive optical imaging techniques, including X-ray and near-infrared (NIR), hold significant value for scientific research and industrial applications. However, there is still a lack of a convenient platform that integrates X-ray imaging and NIR imaging in both bright- and dark-field applications. Here, a rare-earth ion-doped LaNbO 4:Pr,Er photochromic luminescent material is developed, integrating X-ray-induced coloration, NIR-induced bleaching, photoluminescence, and luminescence modulation. Under alternating X-ray and NIR light irradiation, the reflectivity and luminescence intensity can be reversibly tuned to display four optical states: white, black, dark, and bright. By utilizing the switchable optical states, quad-mode imaging of X-ray and NIR in bright and dark fields is achieved. NIR-induced photobleaching imaging, when employed as adjuncts to X-ray-induced photochromic imaging, has the potential to significantly reduce radiation-induced damage to biological tissues. These results provide unique insights for designing advanced materials and photonic storage technologies toward advanced multiwavelength, multienvironment, and multimode noninvasive imaging.