A fiber-optic methane gas sensor system with improved accuracy using absorption-spectrum matched comb filter

2012 ◽  
Author(s):  
Duan Liu ◽  
Ming Tang ◽  
Zhiyong Zhao ◽  
Songnian Fu ◽  
Deming Liu ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Gas Sensor ◽  
Fiber Optic ◽  
Sensor System ◽  
Comb Filter ◽  
Methane Gas ◽  
Improved Accuracy

Comb Filter-Based Fiber-Optic Methane Sensor System With Mitigation of Cross Gas Sensitivity

2012 ◽  
Vol 30 (19) ◽  
pp. 3103-3109 ◽  
Author(s):  
Duan Liu ◽  
Songnian Fu ◽  
Ming Tang ◽  
Perry Shum ◽  
Deming Liu
Keyword(s):  
Fiber Optic ◽  
Sensor System ◽  
Comb Filter ◽  
Gas Sensitivity ◽  
Methane Sensor

scholarly journals A Robust Distributed Multipoint Fiber Optic Gas Sensor System Based on AGC Amplifier Structure

Sensors ◽  
2016 ◽  
Vol 16 (8) ◽  
pp. 1187 ◽  
Author(s):  
Cunguang Zhu ◽  
Rende Wang ◽  
Xuechen Tao ◽  
Guangwei Wang ◽  
Pengpeng Wang
Keyword(s):  
Gas Sensor ◽  
Fiber Optic ◽  
Sensor System

Synthesis, performance and growth mechanism of silver nanoparticle coated SERS fiber probe

2019 ◽  
Vol 107 (3) ◽  
pp. 305
Author(s):  
Mengmei Geng ◽  
Yuting Long ◽  
Tongqing Liu ◽  
Zijuan Du ◽  
Hong Li ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Absorption Spectrum ◽  
Reaction Time ◽  
Growth Mechanism ◽  
Fiber Optic ◽  
Fiber Optic Probe ◽  
Visible Absorption ◽  
Fiber Probe ◽  
Surface Enhanced Raman ◽  
Optic Probe

Surface-enhanced Raman Scattering (SERS) fiber probe provides abundant interaction area between light and materials, permits detection within limited space and is especially useful for remote or in situ detection. A silver decorated SERS fiber optic probe was prepared by hydrothermal method. This method manages to accomplish the growth of silver nanoparticles and its adherence on fiber optic tip within one step, simplifying the synthetic procedure. The effects of reaction time on phase composition, surface plasmon resonance property and morphology were investigated by X-ray diffraction analysis (XRD), ultraviolet-visible absorption spectrum (UV-VIS absorption spectrum) and scanning electron microscope (SEM). The results showed that when reaction time is prolonged from 4–8 hours at 180 °C, crystals size and size distribution of silver nanoparticles increase. Furthermore, the morphology, crystal size and distribution density of silver nanoparticles evolve along with reaction time. A growth mechanism based on two factors, equilibrium between nucleation and growth, and the existence of PVP, is hypothesized. The SERS fiber probe can detect rhodamin 6G (R6G) at the concentration of 10−6 M. This SERS fiber probe exhibits promising potential in organic dye and pesticide residue detection.

Graphene Decorated with Silver Nanoparticles as a Low-Temperature Methane Gas Sensor

2019 ◽  
Vol 11 (24) ◽  
pp. 21795-21806 ◽  
Author(s):  
Rezvan Ghanbari ◽  
Rosa Safaiee ◽  
Mohammad H. Sheikhi ◽  
Mohammad M. Golshan ◽  
Z. Karami Horastani
Keyword(s):  
Silver Nanoparticles ◽  
Low Temperature ◽  
Gas Sensor ◽  
Methane Gas
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