机械容积
压力(语言学)
材料科学
储能
计算机科学
存水弯(水管)
光电探测器
功率(物理)
光电子学
电气工程
环境科学
物理
工程类
荧光粉
量子力学
环境工程
语言学
哲学
作者
Yixi Zhuang,Dong Tu,Changjian Chen,Le Wang,Hongwu Zhang,Xue Han,Conghui Yuan,Guorong Chen,Caofeng Pan,Lizong Dai,Rong‐Jun Xie
标识
DOI:10.1038/s41377-020-00422-4
摘要
Stress sensing is the basis of human-machine interface, biomedical engineering, and mechanical structure detection systems. Stress sensing based on mechanoluminescence (ML) shows significant advantages of distributed detection and remote response to mechanical stimuli and is thus expected to be a key technology of next-generation tactile sensors and stress recorders. However, the instantaneous photon emission in ML materials generally requires real-time recording with a photodetector, thus limiting their application fields to real-time stress sensing. In this paper, we report a force-induced charge carrier storage (FICS) effect in deep-trap ML materials, which enables storage of the applied mechanical energy in deep traps and then release of the stored energy as photon emission under thermal stimulation. The FICS effect was confirmed in five ML materials with piezoelectric structures, efficient emission centres and deep trap distributions, and its mechanism was investigated through detailed spectroscopic characterizations. Furthermore, we demonstrated three applications of the FICS effect in electronic signature recording, falling point monitoring and vehicle collision recording, which exhibited outstanding advantages of distributed recording, long-term storage, and no need for a continuous power supply. The FICS effect reported in this paper provides not only a breakthrough for ML materials in the field of stress recording but also a new idea for developing mechanical energy storage and conversion systems.
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