Delayed stress memory by CaAl_(2)O_(4):Eu^(2+) mechanoluminescent phosphor with defect engineering regulation
作者机构：School of Mechanical EngineeringInstitute for Advanced MaterialsChengdu UniversityChengdu 610106China College of Materials Science and EngineeringKey Laboratory of Advanced Materials of Yunnan ProvinceKunming University of Science and TechnologyKunming 650093China Department of OrthopedicsThe First People’s Hospital of Yunnan ProvinceKunming 650093China School of Physics and Opto-Electronic TechnologyBaoji University of Arts and SciencesBaoji 721016China Research Institute for New Materials TechnologyChongqing University of Arts and SciencesChongqing 402160China
出 版 物：《Journal of Advanced Ceramics》 (先进陶瓷（英文）)
年 卷 期：2022年第11卷第8期
页 面：1319-1329页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：This work was financially supported by the National Natural Science Foundation of China(No.61965012) Project of Yunnan Provincial Natural Science Foundation(Nos.202001AS070008,202101AT070126) Yunnan Ten Thousand Talents Plan Young&Elite Talents Project(No.YNWRQNBJ-2018-295) the Excellent Youth Project of Yunnan Province Applied Basic Research Project(No.2019FI001) Rare and Precious Metal Materials Genome Engineering Project of Yunnan Province(No.202002AB080001) Sichuan Natural Science Foundation(No.2022JDJQ0030)
主 题：delayed stress memory mechanoluminescent film stress information defect engineering closed mechanical structure
摘 要：Real-time stress sensing based on mechanoluminescence materials has been widely studied for structural health monitoring of bridges,buildings,high-pressure vessels,and other infrastructure ***,this approach is difficult to detect the stress information of closed mechanical ***,we propose a delayed stress memory strategy to record the stress information of closed mechanical structure by the flexible film composed with CaAl_(2)O_(4):Eu^(2+),Sm^(3+)*** the force is applied,the optical information on the film can be read out by the near-infrared laser after a period of time without real-time monitoring,and the stress distribution information of bearings and gears in the engine can be ***,the regulation of trap depth from 0.662 to 1.042 eV allows the captured carriers to remain in the traps for a long time without being released as long persistent luminescence,which is beneficial to the delayed stress ***,this work promotes the application prospect of mechanoluminescence materials in stress sensing,and provides a new idea to record the stress information of closed mechanical structures.
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