摘要
设计了荧光温度传感实验,演示荧光现象和荧光传感技术,并介绍了谱带重心分析法.裁取1小片常见的白色打印纸,附着于纸上的荧光增白剂在405nm光照激发下发出荧光.将纸片加热,从室温到85℃每间隔5℃记录1次荧光发射光谱,其荧光强度随温度升高而猝灭.用谱带重心参量νB描述荧光谱带的位置,与谱峰位置一起用于温度传感,谱峰位置随温度的移动并不显著,重心法给出了可信的传感方程νB=20 636-3.33t.
The fluorescence temperature sensing experiment was designed. The fluorescence phenomenon and fluorescence sensing technology were demonstrated, and the barycenter technique was introduced. Temperature-dependent fluorescence of a piece of white paper was analyzed in the range of 30-85 ℃ under an excitation of 405 nm laser. The thermal quenching and red shift of the paper＇s fluorescence were observed when temperature increased. Finally, a temperature sensing function νB=20 636-3.33t was retrieved using the barycenter technique.
出处
《物理实验》
2017年第6期10-13,共4页
Physics Experimentation
基金
国家自然科学基金(No.61167007
No.61665008)
航空科学基金(No.2016ZD56006)
江西省青年科学家培养计划(No.20153BCB23037)
关键词
荧光
温度
频移
谱带重心
fluorescence
temperature
frequency shift
barycenter wavelength
