题目：Ultrafast near-infrared pyroelectric detector based on inhomogeneous plasmonic metasurface
作者：Youyan Lu1,2, Liyun Liu1,2, Ruoqian Gao3, Ying Xiong4,5, Peiqing Sun1,2, Zhanghao Wu1,2, Kai Wu1,2, Tong Yu1,2, Kai Zhang1,2, Cheng Zhang1,2,6,*, Tarik Bourouina7,8, Xiaofeng Li1,2,*, Xiaoyi Liu1,2,*
单位：
1School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China;
2Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China;
3Suzhou Institute of Biomedical Engineering and Technology of the Chinese Academy of Sciences, Suzhou 215163, China;
4College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China;
5Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China;
6State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, China;
7ESYCOM Lab, UMR 9007 CNRS, Univ Gustave Eiffel, 77454 Marne-la-Vallée, France;
8CINTRA, IRL 3288 CNRS-NTU-THALES, Nanyang Technological University, 637553, Singapore.
摘要：Pyroelectric (PE) detection technologies have attracted extensive attention due to the cooling-free, bias-free, and broadband properties. However, the PE signals are generated by the continuous energy conversion processes from light, heat, to electricity, normally leading to very slow response speeds. Herein, we design and fabricate a PE detector which shows extremely fast response in near-infrared (NIR) band by combining with the inhomogeneous plasmonic metasurface. The plasmonic effect dramatically accelerates the light-heat conversion process, unprecedentedly improving the NIR response speed by 2-4 orders of magnitude to 22 μs, faster than any reported infrared (IR) PE detector. We also innovatively introduce the concept of time resolution into the field of PE detection, which represents the detector’s ability to distinguish multiple fast-moving targets. Furthermore, the spatially inhomogeneous design overcomes the traditional narrowband constraint of plasmonic systems and thus ensures a wideband response from visible to NIR. This study provides a promising approach to develop next-generation IR PE detectors with ultrafast and broadband responses.
影响因子：20.6
链接：https://doi.org/10.1038/s41377-024-01572-5