材料科学
纳米晶
包层(金属加工)
光纤
荧光
光子上转换
光电子学
纤维
复合数
光纤传感器
压力传感器
纳米技术
光学
复合材料
发光
物理
热力学
作者
Qinpeng Chen,Qiwen Pan,Shiliang Kang,Zhenlu Cai,Shengda Ye,Puxian Xiong,Zhongmin Yang,Jianrong Qiu,Guoping Dong
标识
DOI:10.1016/j.fmre.2022.05.011
摘要
The pursuit of compact and integrated devices has stimulated a growing demand for multifunctional sensors with rapid and accurate responses to various physical parameters, either separately or simultaneously. Fluorescent fiber sensors have the advantages of robust stability, light weight, and compact geometry, enabling real-time and noninvasive signal detection by monitoring the fluorescence parameters. Despite substantial progress in fluorescence sensors, achieving multifunctional sensing in a single optical fiber remains challenging. To solve this problem, in this study, we present a bottom-up strategy to design and fabricate thermally drawn multifunctional fiber sensors by incorporating functional nanocrystals with temperature and pressure fluorescence responses into a transparent glass matrix. To generate the desired nanocrystal-in-glass composite (NGC) fiber, the fluorescent activators, incorporated nanocrystals, glassy core materials, and cladding matrix are rationally designed. Utilizing the fluorescence intensity ratio technique, a self-calibrated fiber sensor is demonstrated, with a bi-functional response to temperature and pressure. For temperature sensing, the NGC fiber exhibits temperature-dependent near-infrared emission at temperatures up to 573 K with a maximum absolute sensitivity of 0.019 K
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