High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating
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. Compar...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/5/1134 |
| _version_ | 1827693941166702592 |
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| author | Fang Wang Bowen Wang Xuhui Zhang Mengdi Lu Yang Zhang Changsen Sun Wei Peng |
| author_facet | Fang Wang Bowen Wang Xuhui Zhang Mengdi Lu Yang Zhang Changsen Sun Wei Peng |
| author_sort | Fang Wang |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T11:54:22Z |
| format | Article |
| id | doaj.art-a9a30f3f6e5048c8883e07d9a5b05070 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T11:54:22Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-a9a30f3f6e5048c8883e07d9a5b050702023-11-21T17:27:23ZengMDPI AGNanomaterials2079-49912021-04-01115113410.3390/nano11051134High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg GratingFang Wang0Bowen Wang1Xuhui Zhang2Mengdi Lu3Yang Zhang4Changsen Sun5Wei Peng6School of Optoelectronic Engineering and Instrument Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrument Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Physics, Dalian University of Technology, Dalian 116024, ChinaA 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.https://www.mdpi.com/2079-4991/11/5/1134fiber Bragg gratinggraphene oxidehumidity detectionmulti-walled carbon nanotubes |
| spellingShingle | Fang Wang Bowen Wang Xuhui Zhang Mengdi Lu Yang Zhang Changsen Sun Wei Peng High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating Nanomaterials fiber Bragg grating graphene oxide humidity detection multi-walled carbon nanotubes |
| title | High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating |
| title_full | High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating |
| title_fullStr | High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating |
| title_full_unstemmed | High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating |
| title_short | High Sensitivity Humidity Detection Based on Functional GO/MWCNTs Hybrid Nano-Materials Coated Titled Fiber Bragg Grating |
| title_sort | high sensitivity humidity detection based on functional go mwcnts hybrid nano materials coated titled fiber bragg grating |
| topic | fiber Bragg grating graphene oxide humidity detection multi-walled carbon nanotubes |
| url | https://www.mdpi.com/2079-4991/11/5/1134 |
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