Relative humidity sensor of S fiber taper based on graphene oxide film

Zhao, Yang; Li, Aiwu; Guo, Qi; Ming, Xin-Yu; Zhu, Yong-Qin; Sun, Xiang‐Chao; Li, Pu; Yu, Yong‐Sen

doi:10.1016/j.optcom.2019.05.072

Cited by 29 publications

(8 citation statements)

References 26 publications

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“…It has a prominent surface area, strong adsorption capacity, and other advantages, and contains oxygen-containing groups, such as carboxyl, hydroxyl. [66] For tapered optical fibers, the energy outflow from the cladding and the interface between the cladding and the outside serve as the support node. Therefore, the penetration depth at the node can be expressed by the following formula,…”

Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Functionalized Gold Nanoparticles: Synthesis, Properties and Biomedical Applications

Fan

Cheng

Sun

2020

The Chemical Record

104

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Gold nanoparticles have excellent optical and plasmon properties and have enormous research potential when they combine with different ligands. Functionalized gold nanoparticles are widely used in drug delivery, biological detection, sensors, and even clinical treatment. At present, with the rapid development of functionalized gold nanoparticles, we think it is necessary to sort out the recent research results. In this paper, the synthesis, characteristics, and biological applications of the three aspects are introduced. Firstly, the synthetic methods of functionalized gold nanoparticles are reviewed, and the improvement of the commonly used synthetic methods is summarized. Then, the catalytic properties, oxidation resistance, and chirality optical properties are summarized in detail. Finally, we summarize the research progress in the field of biology in recent years.

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Section: P E R S O N a L A C C O U N T T H E C H E M I C A L R E C O R Dmentioning

confidence: 99%

Functionalized Gold Nanoparticles: Synthesis, Properties and Biomedical Applications

Fan

Cheng

Sun

2020

The Chemical Record

104

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“…However, the CNTs solution is difficult to dissolve and usually generates large aggregates due to the intertubular Van der Waals interactions and high chemical inertness, which greatly restrict their sensing application. Using GO as a surfactant to disperse CNTs has been reported [ 33 ]. The combination of MWCNTs and GO offers larger surface area and makes water molecules easily absorbed.…”

Section: Resultsmentioning

confidence: 99%

“…In the RH range from 60% RH to 95% RH, this proposed sensor has shown a sensitivity of 0.15 dB/% RH (R 2 = 0.980) [ 32 ]. The S taper fiber sensor based on GO film (maximum intensity sensitivity –0.361 dB/% RH, maximum wavelength sensitivity 365 pm/% RH) was proposed for measuring RH by Y. Zhao et al [ 33 ]. In those humidity sensors, the RI of the GO will be changed by the interaction of GO and water molecules resulting in the amplitude/wavelength variations of resonance peaks with environmental humidity levels.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Zhang

et al. 2021

Nanomaterials

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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.

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“…In recent years, various optical fiber RH sensors have been designed, owing to their small size, fast response, high sensitivity, anti-electromagnetic interference, and corrosion resistance. Many sensing structures for RH measurement have been reported, such as fiber grating [1][2][3], directional coupler [4,5], microfiber resonator [6][7][8][9], fiber interferometer [10][11][12][13][14]. For example, G. Woyessa et al proposed a polycarbonate (PC) based polymer optical fiber Bragg grating (FBG) that can realize RH sensing within the temperature range from 20 °C to 100 °C [2].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the SFT with surface evanescent field can be considered as a compact in-line MZI for sensing due to its advantages of small size, easy fabrication and high sensitivity. Y. Zhao et al proposed a SFT based RH sensor by an in-situ layer-by-layer technique [13], the temperature fluctuations had less than 2 %RH impact on the humidity test during the range of 30 ℃~45 ℃. However, in the limited temperature range of 15 ℃, the temperature-cross sensitivity is unsolved in fact, and the SFT based RH sensor works under the conventional transmission mode, which is limited in the measuring environment with special narrow space.…”

Section: Introductionmentioning

confidence: 99%

Reflective SFT-FBG Hybrid Micro-Probe for Simultaneous Measurement of Relative Humidity and Temperature

Niu

Jiang

et al. 2022

IEEE Photonics J.

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An optical fiber probe composed of a fiber Bragg grating (FBG) and a reflective S fiber taper (SFT) with graphene oxide (GO) film, for simultaneous relative humidity (RH) and temperature measurement, was proposed and experimentally demonstrated in this paper. The SFT is made into reflection type by depositing silver mirror at the fiber end face, which is highly sensitive to surrounding refractive index (RI). The GO nanosheets, as a two-dimensional hydrophilic nano material, is coated on the fiber surface, acting as a RH-to-RI converter. The simultaneous RH and temperature measurements are realized by monitoring the characteristic wavelength shifts of the SFT and FBG in the reflection spectrum. Experimental results show that the RH sensitivity of the probe is 161.1 pm/%RH during the range of 30 %RH~90 %RH, and the temperature sensitivity is 14.1 pm/°C during the range of 10 ℃~50 ℃. The proposed probe is compact, flexible, and easy to be fabricated, which has potential application for precise localized measurement in medical and biochemical fields.

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Relative humidity sensor of S fiber taper based on graphene oxide film

Cited by 29 publications

References 26 publications

Functionalized Gold Nanoparticles: Synthesis, Properties and Biomedical Applications

Functionalized Gold Nanoparticles: Synthesis, Properties and Biomedical Applications

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

Reflective SFT-FBG Hybrid Micro-Probe for Simultaneous Measurement of Relative Humidity and Temperature

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