High-performance humidity sensor based on a micro-nano fiber Bragg grating coated with graphene oxide

2020 ◽  
Vol 28 (18) ◽  
pp. 26395
Author(s):  
Meng Tian ◽  
Yanhua Huang ◽  
Cong Li ◽  
Min Lv
Keyword(s):  
Graphene Oxide ◽  
Fiber Bragg Grating ◽  
High Performance ◽  
Humidity Sensor ◽  
Bragg Grating ◽  
Nano Fiber

scholarly journals High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1134
Author(s):  
Fang Wang ◽  
Bowen Wang ◽  
Xuhui Zhang ◽  
Mengdi Lu ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Fiber Bragg Grating ◽  
High Performance ◽  
Humidity Sensor ◽  
3D Structure ◽  
Detection Sensitivity ◽  
Complex Dielectric Constant ◽  
Bragg Grating ◽  
Nano Materials ◽  
Detection Range ◽  
Hybrid Nanomaterial

A high performance humidity sensor using tilted fiber Bragg grating (TFBG) and functional graphene oxide (GO)/multi-walled carbon nanotubes (MWCNTs) hybrid nano-materials was proposed. The humidity-sensitive material with three-dimensional (3D) structure was synthesized by the MWCNTs and GOs. Comparing with traditional two dimensional (2D) GOs film, water molecules could be absorbed effectively due to the larger ripples and more holes in GO/MWCNTs layers. The water molecule will fill the entire space in the 3D structure instead of air, which further enhances the absorption efficiency of the hybrid nanomaterial. TFBG as a compact and robust surrounding complex dielectric constant sensing platform was utilized. The mode coupling coefficient or the amplitude of TFBG cladding mode will vary sharply with the imaginary part of permittivity of the hybrid nanomaterial, realizing the high performance RH sensing. In the experiments, we successfully demonstrated that this 3D structural nanomaterial composed by the MWCNTs and GOs has significant advantages for expanding the range of humidity detection (range from 30% to 90%) and enhancing the detection sensitivity (0.377 dB/% RH is twice more than humidity sensor with 2D GO film). The TFBG-based RH sensor also exhibits good repeatability and stability. Our proposed humidity sensor has potential application in environmental and healthy monitoring fields.

Fiber optic relative humidity sensor based on the tilted fiber Bragg grating coated with graphene oxide

2016 ◽  
Vol 109 (3) ◽  
pp. 031107 ◽  
Author(s):  
Youqing Wang ◽  
Changyu Shen ◽  
Weimin Lou ◽  
Fengying Shentu ◽  
Chuan Zhong ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Relative Humidity ◽  
Fiber Bragg Grating ◽  
Humidity Sensor ◽  
Fiber Optic ◽  
Bragg Grating ◽  
Relative Humidity Sensor

Relative Humidity Sensor Based on Tilted Fiber Bragg Grating With Polyvinyl Alcohol Coating

2009 ◽  
Vol 21 (7) ◽  
pp. 441-443 ◽  
Author(s):  
Yinping Miao ◽  
Bo Liu ◽  
Hao Zhang ◽  
Yuan Li ◽  
Haibin Zhou ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Polyvinyl Alcohol ◽  
Fiber Bragg Grating ◽  
Humidity Sensor ◽  
Bragg Grating ◽  
Relative Humidity Sensor

Early-Age Autogenous Shrinkage of High-Performance Concrete Columns by Embedded Fiber Bragg-Grating Sensor

2009 ◽  
Vol 419-420 ◽  
pp. 1-4 ◽  
Author(s):  
Ying Wei Yun ◽  
Ii Young Jang ◽  
Seong Kyum Kim ◽  
Seung Min Park
Keyword(s):  
Fiber Bragg Grating ◽  
High Performance ◽  
High Performance Concrete ◽  
Construction Material ◽  
Autogenous Shrinkage ◽  
Strain Sensor ◽  
Bragg Grating ◽  
Early Age ◽  
Long Time ◽  
Sensor Temperature

High-performance concrete (HPC) as a promising construction material has been widely used in infrastructures and high-rise buildings etc. However, its pretty high autogenous shrinkage (AS) especially in its early age becomes one of the key problems endangering long-time durability of HPC structures. This paper carried out the early age AS research of large scaled HPC column specimens by embedded Fiber Bragg-Grating (FBG) strain sensor. Temperature compensation for FBG strain sensor by thermocouple was also attempted in this paper, and the results were reasonable and acceptable comparing with the result compensated by FBG temperature sensor. Reinforcement influence, size effect and temperature effect on HPC AS were also analyzed respectively in this paper.

Graphene-oxide Coated on Fiber Bragg Grating for Temperature Sensor

2021 ◽  
Author(s):  
Norazlina Saidin ◽  
Nurul Farhana Husna Kamarozaman ◽  
Farah Sakiinah Roslan ◽  
Aliza Aini Md Ralib ◽  
Lim Kok Sing
Keyword(s):  
Graphene Oxide ◽  
Fiber Bragg Grating ◽  
Temperature Sensor ◽  
Bragg Grating
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