Spectral characteristics of gold nanoparticle doped optical fibre under axial strain

Wang, Xiang; Benedictus, Rinze; Groves, Roger M.

doi:10.1038/s41598-022-20726-2

Cited by 5 publications

(7 citation statements)

References 29 publications

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“…From the previous work, low-concentration NP-doping shows similar spectral characteristics in the wavelength and wave number domains [34] for diferent sizes of NPs. To simplify the simulation, only 100 NPs (100 nm diameter) were randomly seeded in the gauge lengths for a low concentration of NP doping.…”

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...supporting

confidence: 53%

“…Te NP-doped optical fbres' backscattered light spectra difer from the commercial signal mode optical fbres or fbre Bragg gratings. Te new spectral characteristics of NP-doped optical fbre under strain were obtained in previous work [34].…”

Section: Introductionsupporting

confidence: 52%

“…Te number of the NPs in the core of the optical fbre was set at 100. Te reason for choosing 100 NPs is that 1: it is a very low concentration and it meets the single scattering assumption (l < 1/c/C ext , where l here is the gauge length, c is the concentration of the NPs and C ext is the extinction crosssection for the NP which can be calculated by Mie theory) for the set gauge lengths; 2: the spectral characteristics show similarities when it meets the single scattering requirement according the results from the research [34]. In this case, the generated spectra are general and can also be valid for other concentration cases.…”

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 88%

“…In this case, the relative positions of the gold NPs in the sensing fbre will change and the RI of the optical fbre will change also. Te backscattered spectra from the NPs in the gauge length were modelled by a single scattering model which means the light will be backscattered once in the propagation direction and can be expressed as follows [34]: where λ NP ′ is the spectrum under strain and λ NP is the reference spectrum. η m � − (p 12 − ](p 11 + p 12 ))n 2 /2 which is the parameter caused by the RI change under strain [43].…”

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 99%

“…Te amplitudes of the scattered light were calculated with Mie theory. Once the NPs have been seeded, the spectral intensity can be expressed by the square of the accumulation of the electric feld caused by the scattering from the NPs as follows [34]:…”

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 99%

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Enhanced Strain Measurement Sensitivity with Gold Nanoparticle‐Doped Distributed Optical Fibre Sensing

Wang,

Xiao,

Rans

et al. 2024

Structural Control and Health Monitoring

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Nanoparticle- (NP-) doped optical fibres show the potential to increase the signal-to-noise ratio and thus the sensitivity of optical fibre strain detection for structural health monitoring. In this paper, our previous experimental/simulation study is extended to a design study for strain monitoring. 100 nm spherical gold NPs were randomly seeded in the optical fibre core to increase the intensity of backscattered light. Backscattered light spectra were obtained in different wavelength ranges around the infrared C-band and for different gauge lengths. Spectral shift values were obtained by cross-correlation of the spectra before and after strain change. The results showed that the strain accuracy has a positive correlation with the relative spectral sensitivity and that the strain precision decreases with increasing noise. Based on the simulated results, a formula for the sensitivity of the NP-doped optical fibre sensor was obtained using an aerospace case study to provide realistic strain values. An improved method is proposed to increase the accuracy of strain detection based on increasing the relative spectral sensitivity, and the results showed that the error was reduced by about 50%, but at the expense of a reduced strain measurement range and more sensitivity to noise. These results contribute to the better application of NP-doped optical fibres for strain monitoring.

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Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...supporting

confidence: 53%

Section: Introductionsupporting

confidence: 52%

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 88%

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 99%

Section: Te Methods Of the Spectral Shift Detection By Cross-correlat...mentioning

confidence: 99%

See 3 more Smart Citations

Enhanced Strain Measurement Sensitivity with Gold Nanoparticle‐Doped Distributed Optical Fibre Sensing

Wang,

Xiao,

Rans

et al. 2024

Structural Control and Health Monitoring

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Enhanced-Backscattering and Enhanced-Backreflection Fibers for Distributed Optical Fiber Sensors

Lee

Beresna

Masoudi

et al. 2023

J. Lightwave Technol.

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Most distributed optical fiber sensors rely on commercially available telecom fibers, which are low-loss, inexpensive, and standardized. In the last few years, significant effort has been made to develop optical fibers optimized for specific sensing applications, with the view of improving the signalto-noise ratio (SNR) or extending the distance over which distributed optical fiber sensors (DOFS) operate. This tutorial reviews the efforts made by the scientific community towards the development of enhanced backscattering fibers and enhanced backreflection fibers, with a focus on DOFS.

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Opportunities for nanomaterials in more sustainable aviation

Pendashteh,

Mikhalchan,

Blanco Varela

et al. 2024

Discover Nano

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New materials for electrical conductors, energy storage, thermal management, and structural elements are required for increased electrification and non-fossil fuel use in transport. Appropriately assembled as macrostructures, nanomaterials can fill these gaps. Here, we critically review the materials science challenges to bridge the scale between the nanomaterials and the large-area components required for applications. We introduce a helpful classification based on three main macroscopic formats (fillers in a matrix, random sheets or aligned fibres) of high-aspect ratio nanoparticles, and the corresponding range of bulk properties from the commodity polymer to the high-performance fibre range. We review progress over two decades on macroscopic solids of nanomaterials (CNTs, graphene, nanowires, etc.), providing a framework to rationalise the transfer of their molecular-scale properties to the scale of engineering components and discussing strategies that overcome the envelope of current aerospace materials. Macroscopic materials in the form of organised networks of high aspect ratio nanomaterials have higher energy density than regular electrodes, superior mechanical properties to the best carbon fibres, and electrical and thermal conductivity above metals. Discussion on extended electrical properties focuses on nanocarbon-based materials (e.g., doped or metal-hybridised) as power or protective conductors and on conductive nanoinks for integrated conductors. Nanocomposite electrodes are enablers of hybrid/electric propulsion by eliminating electrical transport limitations, stabilising emerging high energy density battery electrodes, through high-power pseudocapacitive nanostructured networks, or downsizing Pt-free catalysts in flying fuel cells. Thermal management required in electrified aircraft calls for nanofluids and loop heat pipes of nanoporous conductors. Semi-industrial interlaminar reinforcement using nanomaterials addresses present structural components. Estimated improvements for mid-range aircraft include > 1 tonne weight reduction, eliminating hundreds of CO2 tonnes released per year and supporting hybrid/electric propulsion by 2035.

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Spectral characteristics of gold nanoparticle doped optical fibre under axial strain

Cited by 5 publications

References 29 publications

Enhanced Strain Measurement Sensitivity with Gold Nanoparticle‐Doped Distributed Optical Fibre Sensing

Enhanced Strain Measurement Sensitivity with Gold Nanoparticle‐Doped Distributed Optical Fibre Sensing

Enhanced-Backscattering and Enhanced-Backreflection Fibers for Distributed Optical Fiber Sensors

Opportunities for nanomaterials in more sustainable aviation

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