Fiber-optic Flammable Vapor Sensor Based on a Porous Cholesteric Liquid Crystal Film

被引：0
作者：
Ahn, Soyeon [1 ]
Hwang, Na Hyeon [1 ]
Kim, Min Su [1 ]
Kim, Ji Su [1 ]
Choi, Byeong Kwon [2 ]
Cho, Sung Yoon [1 ]
Yoo, Jaehyun [1 ]
Bak, Na-Hyun [1 ]
Kim, Moon-Deock [1 ,3 ]
Kim, Jong Hyun [1 ,3 ]
Jeon, Min Yong [1 ,3 ]
机构：
[1] Chungnam Natl Univ, Dept Phys, Deajeon 34134, South Korea
[2] Siemens Elect Design Automat Korea LLC, Seongnam Si 13524, Gyeonggi Do, South Korea
[3] Chungnam Natl Univ, Inst Quantum Syst, Daejeon 34134, South Korea
来源：
29TH INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2025年 / 13639卷
基金：
新加坡国家研究基金会;
关键词：
Cholesteric liquid crystal film; Flammable vapor sensor; optical-fiber sensor; GAS SENSOR;
D O I：
10.1117/12.3059504
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this study, we present an all-fiber sensor based on porous cholesteric liquid crystal film (CLCF) coated on the cross-section of an optical fiber ferrule for real-time monitoring of flammable vapors in industrial environments. Reflection band shifts according to the concentration of gases were measured using a broadband wavelength-swept laser, and the sensitivity were 3.19 pm/ppm, 4.88 pm/ppm, and 6.61 pm/ppm were obtained for acetone, toluene, and benzene vapors, respectively, with benzene vapor showing the highest sensitivity. Compared to nonporous CLCFs, the porous CLCF showed six times higher sensitivity. This sensor, which operates passively without a battery, is immune to electromagnetic interference, suggesting its potential as a reliable sensor.
引用
收藏
页数：4
相关论文
共 16 条
[1]   Fiber-Optic Temperature Sensor Using Cholesteric Liquid Crystals on the Optical Fiber Ferrules [J].
Ahn, Soyeon ;
Lee, Gi Hyen ;
Lee, Jun-Yong ;
Kim, Youngseo ;
Kim, Min Su ;
Pagidi, Srinivas ;
Choi, Byeong Kwon ;
Kim, Ji Su ;
Kim, Jong-Hyun ;
Jeon, Min Yong .
SENSORS, 2022, 22 (15)
[2]   Ultra-Compact Optical Fiber Gas Sensor With High Sensitivity, Fast Response and Large Dynamic Range [J].
Guo, Linhao ;
Bao, Haihong ;
Chen, Feifan ;
Zhao, Pengcheng ;
Jiang, Shoulin ;
Ho, Hoi Lut ;
Jin, Wei .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2024, 42 (07) :2617-2624
[3]   Temperature-compensated optical fiber sensor for volatile organic compound gas detection based on cholesteric liquid crystal [J].
Hu, Jianyang ;
Chen, Yuzhou ;
Ma, Zhenyu ;
Zeng, Li ;
Zhou, Dong ;
Peng, Zenghui ;
Sun, Weimin ;
Liu, Yongjun .
OPTICS LETTERS, 2021, 46 (14) :3324-3327
[4]   SnO2 nanostructured materials used as gas sensors for the detection of hazardous and flammable gases: A review [J].
Kong, Yulin ;
Li, Yuxiu ;
Cui, Xiuxiu ;
Su, Linfeng ;
Ma, Dian ;
Lai, Tingrun ;
Yao, Lijia ;
Xiao, Xuechun ;
Wang, Yude .
NANO MATERIALS SCIENCE, 2022, 4 (04) :339-350
[5]   Simultaneous Temperature and Strain Measurement in Fiber Bragg Grating via Wavelength-Swept Laser and Machine Learning [J].
Kwon Choi, Byeong ;
Su Kim, Ji ;
Ahn, Soyeon ;
Yoon Cho, Sung ;
Su Kim, Min ;
Yoo, Jaehyun ;
Yong Jeon, Min .
IEEE SENSORS JOURNAL, 2024, 24 (17) :27516-27524
[6]   Cholesteric Liquid Crystal Droplets for Biosensors [J].
Lee, Hyun-Gyu ;
Munir, Sundas ;
Park, Soo-Young .
ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (39) :26407-26417
[7]   Porous Silicon Structures as Optical Gas Sensors [J].
Levitsky, Igor A. .
SENSORS, 2015, 15 (08) :19968-19991
[8]   Structure design and application of hollow core microstructured optical fiber gas sensor: A review [J].
Li, Jin ;
Yan, Hao ;
Dang, Hongtao ;
Meng, Fanli .
OPTICS AND LASER TECHNOLOGY, 2021, 135
[9]   Pre-compressed polymer cholesteric liquid crystal based optical fiber VOC sensor with high stability and a wide detection range [J].
Li, Yong ;
Yin, Zhen ;
Luo, Dan .
OPTICS EXPRESS, 2022, 30 (18) :32822-32832
[10]   Sensitivity Optimization of a Microstructured Optical Fiber Ammonia Gas Sensor by Means of Tuning the Thickness of a Metal Oxide Nano-Coating [J].
Lopez-Torres, Diego ;
Lopez-Aldaba, Aitor ;
Elostia Aguado, Cesar ;
Auguste, Jean-Louis ;
Jamier, Raphael ;
Roy, Philippe ;
Lopez-Amo, Manuel ;
Arregui, Francisco J. .
IEEE SENSORS JOURNAL, 2019, 19 (13) :4982-4991
12