TY - JOUR
T1 - Ethanol sensor based on cascaded tapered optical fiber with surface modification of ZIF-8
AU - Wang, Zahgnqiang
AU - Ma, Hongyu
AU - Yang, Xinghua
AU - Copner, Nigel
AU - Jiang, Yuhan
AU - Li, Kang
PY - 2024/3/1
Y1 - 2024/3/1
N2 - To detect trace amounts of ethanol in the air, a cascaded tapered optical fiber sensor with surface modified ZIF-8 was proposed. Using an in-situ growth method, ZIF-8 was immobilized on the surface of the sensing tapered optical fiber. Simultaneously, another reference tapered fiber with a similar Free Spectral Range (FSR) was connected in series, creating a Vernier effect that can amplify slight changes in the surface Refractive Index (RI) of the sensing tapered fiber. The RI sensitivity of the cascaded tapered fiber was 18366.17 nm/RIU, which was 9.6 times that of a single tapered fiber. The sensitivity of the sensor to ethanol gas at room temperature was investigated. In the concentration range of 0-140 ppm, the sensitivity was 0.1411 nm/ppm. The sensor exhibits high sensitivity, good reversibility and the capability for online detection, making it a convenient tool for monitoring ethanol leaks in industrial production.
AB - To detect trace amounts of ethanol in the air, a cascaded tapered optical fiber sensor with surface modified ZIF-8 was proposed. Using an in-situ growth method, ZIF-8 was immobilized on the surface of the sensing tapered optical fiber. Simultaneously, another reference tapered fiber with a similar Free Spectral Range (FSR) was connected in series, creating a Vernier effect that can amplify slight changes in the surface Refractive Index (RI) of the sensing tapered fiber. The RI sensitivity of the cascaded tapered fiber was 18366.17 nm/RIU, which was 9.6 times that of a single tapered fiber. The sensitivity of the sensor to ethanol gas at room temperature was investigated. In the concentration range of 0-140 ppm, the sensitivity was 0.1411 nm/ppm. The sensor exhibits high sensitivity, good reversibility and the capability for online detection, making it a convenient tool for monitoring ethanol leaks in industrial production.
KW - Tapered Fiber
KW - Vernier Effect
KW - ZIF-8
KW - Ethanol sensor
U2 - 10.1016/j.snb.2023.135084
DO - 10.1016/j.snb.2023.135084
M3 - Article
SN - 0925-4005
VL - 402
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
M1 - 135084
ER -