摘要
研究了环境湿度对吸滤滤纸的荧光特性的影响,进而利用滤纸荧光的湿度敏感性,实现了以滤纸作为敏感材料的响应快速、操作简易的光学无线湿度传感检测.利用荧光光谱仪搭建了实验系统,分析了滤纸在405 nm光照激发下的荧光光谱随环境湿度的变化,观察到滤纸的荧光强度随湿度增加而猝灭;通过对荧光光谱的谱峰位置、谱型随湿度的变化的分析,发现荧光强度比与环境相对湿度之间有明确的单调对应关系,可以作湿度传感应用.实验还发现,不同孔隙率的滤纸其湿度传感灵敏度不同.综合评判同品牌快速、中速、慢速三款滤纸的灵敏度和分辨力,中速滤纸表现较好.
The influence of humidity on the fluorescence of filter paper was investigated,and a wireless humidity sensing system was established according to the sample’s rapid response to humidity change.The fluorescence intensity of the paper sample was quenched by humidity,and the emission feature of the sample varied with the environmental humidity.A fluorescence spectrometer was adopted to build a humidity sensing system.To optimize the sensitivity and resolution,the porosity of the sample was evaluated.It was found that filter paper with a medium filtration rate performed better than those with higher or lower rate.
作者
万璐
张巍巍
朱泉水
王嘉豪
肖慧荣
龚勇清
伏燕军
WAN Lu;ZHANG Wei-wei;ZHU Quan-shui;WANG Jia-hao;XIAO Hui-rong;GONG Yong-qing;FU Yan-jun(School of Measuring and Optical Engineering,Nanchang Hangkong University,Nanchang 330063,China;Key Laboratory of Nondestructive Testing of Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;College Physics Experiment Center,Nanchang Hangkong University,Nanchang 330063,China)
出处
《物理实验》
2020年第12期44-48,共5页
Physics Experimentation
基金
国家自然科学基金项目资助(No.61665008)
南昌航空大学创新创业教育课程培育项目资助(No.KCPY1916)
南昌航空大学大学物理实验中心开放课题资助(No.SY1813)。
关键词
荧光光谱
湿度检测
滤纸
fluorescence spectroscopy
humidity examination
filter paper
作者简介
万璐(1999-),女,江西新余人,南昌航空大学测试与光电工程学院2017级本科生;通讯作者:张巍巍(1974-),男,湖北黄冈人,南昌航空大学测试与光电工程学院副教授,博士,主要从荧光式传感技术研究.E-mail:zdw@ustc.edu。
