采用化学吸附发光体作为光学非稳态压力传感器的实用快速响应阳极氧化铝压敏漆

Practical Fast-Response Anodized-Aluminum Pressure-Sensitive Paint Using Chemical Adsorption Luminophore as Optical Unsteady Pressure Sensor.

作者信息

Oka Yoshinori, Nagata Takayuki, Kasai Miku, Ozawa Yuta, Asai Keisuke, Nonomura Taku

机构信息

Department of Aerospace Engineering, Graduate School of Engineering, Tohoku University, 6-6-01 Aramakiaza-Aoba, Aoba-ku, Sendai 980-8579, Japan.

出版信息

Sensors (Basel). 2022 Aug 25;22(17):6401. doi: 10.3390/s22176401.

DOI:10.3390/s22176401

PMID:36080859

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9460456/

Abstract

We developed and evaluated an anodized-aluminum pressure-sensitive paint (AA-PSP) with new formulations of free-base porphyrin, H2TCPP, as an optical unsteady pressure sensor. The luminophore H2TCPP has quite a short fluorescent lifetime (2.4 ns on the condition of the AA-PSP). The fluorescence spectroscopy result shows that the excitation wavelength of H2TCPP corresponds to violet-colored (425 nm) and green-colored (longer than 520 nm) lights. The pressure sensitivity is sufficiently high for the pressure sensor (0.33-0.51%/kPa) and the temperature sensitivity is very low (0.07-1.46%/K). The photodegradation of the AA-PSPs is not severe in both excitation light sources of the green LED and the Nd:YAG laser. The resonance tube experiment result shows the cut-off frequency of the AA-PSPs is over 9.0 kHz, and the results of the shock tube experiment show the 10 µs order time constant of the normal shock wave.

摘要

我们研发并评估了一种以新型游离碱卟啉H2TCPP配方制成的阳极氧化铝压敏漆（AA - PSP），用作光学非稳态压力传感器。发光体H2TCPP的荧光寿命相当短（在AA - PSP条件下为2.4纳秒）。荧光光谱结果表明，H2TCPP的激发波长对应于紫色光（425纳米）和绿色光（大于520纳米）。该压力传感器的压力灵敏度足够高（0.33 - 0.51%/千帕），而温度灵敏度非常低（0.07 - 1.46%/开尔文）。在绿色发光二极管和钕：钇铝石榴石激光这两种激发光源下，AA - PSP的光降解都不严重。共振管实验结果表明，AA - PSP的截止频率超过9.0千赫，激波管实验结果表明正常激波的时间常数为10微秒量级。