A Photonic Crystal Fiber-Based Biosensor with Quasi-D-shaped Layout and ITO-Graphene Combination

Tian, Jiaguo; Xu, Cheng; Cui, Songya; Ma, Lei; Fu, Yongqi

doi:10.1007/s11468-020-01344-y

Cited by 25 publications

(5 citation statements)

References 26 publications

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“…The maximum wavelength sensitivity is obtained at the rightmost limit of the RI detection range. The RI sensor also has some advantages among other reported RI sensors [32][33][34][35].…”

Section: The Ri Sensormentioning

confidence: 99%

High sensitivity and wide detection range temperature and refractive index photonic crystal fiber sensor

Du,

Tian

2024

Laser Phys.

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A D-shaped surface plasmon resonance temperature and refractive index (RI) sensor based on photonic crystal fiber is proposed. The fiber core is composed of five air holes arranged in a pentagonal shape, which effectively improves the sensitivity. The gold film is used as a plasmonic material, and the mixture of ethanol and chloroform is used as a temperature sensitive liquid. A finite element method with higher accuracy and stronger applicability is used to study the performance of the sensor. The results indicate that when filling the mixture, the temperature sensor can detect the temperature in the range of 0 °C–60 °C. A maximum temperature sensitivity of 11.0 nm °C−1 is obtained by filling the mixture. The RI sensor can detect RI in the range of 1.13–1.40, with the wavelength range of 1.2–2.4 μm, and the maximum wavelength sensitivity reaches up to 21 000 nm RIU−1. The sensor can be used in biomedicine, environmental monitoring, food detection, temperature detection and other related fields, and has certain competitiveness and commercial value.

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“…The maximum wavelength sensitivity is obtained at the rightmost limit of the RI detection range. The RI sensor also has some advantages among other reported RI sensors [32][33][34][35].…”

Section: The Ri Sensormentioning

confidence: 99%

High sensitivity and wide detection range temperature and refractive index photonic crystal fiber sensor

Du,

Tian

2024

Laser Phys.

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“…Moreover, TCO substrates have the advantage of cut-off of the optical transmittance at the near-infrared (NIR) region, and their high optical nonlinearities play a major role in the enhancement of light-harvesting properties of photoelectrodes [ 15 ]. Indeed, their conductivity and transparency are explored in the designing of solar cell [ 16 ], electrochromic device [ 17 ], optoelectronic devices [ 18 ], and biosensors [ 19 ]. For example, in the back-side illumination set-up of dye-sensitized solar cells, photoanodes consist of a dye-sensitized nanostructured titania grown onto an opaque titanium foil [ 20 ].…”

Section: Description Of Deposition Techniques Of Tco-ti: Metal Thin F...mentioning

confidence: 99%

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

2022

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Photoanodes consisting of titania nanotubes (TNTs) grown on transparent conductive oxides (TCO) by anodic oxidation are being widely investigated as a low-cost alternative to silicon-based materials, e.g., in solar light-harvesting applications. Intending to enhance the optical properties of those photoanodes, the modification of the surface chemistry or control of the geometrical characteristics of developed TNTs has been explored. In this review, the recent advancement in light-harvesting properties of transparent anodic TNTs formed onto TCO is summarized. The physical deposition methods such as magnetron sputtering, pulsed laser deposition and electron beam evaporation are the most reported for the deposition of Ti film onto TCO, which are subsequently anodized. A concise description of methods utilized to improve the adhesion of the deposited film and achieve TNT layers without cracks and delamination after the anodization is outlined. Then, the different models describing the formation mechanism of anodic TNTs are discussed with particular focus on the impact of the deposited Ti film thickness on the adhesion of TNTs. Finally, the effects of the modifications of both the surface chemistry and morphological features of materials on their photocatalyst and photovoltaic performances are discussed. For each section, experimental results obtained by different research groups are evoked.

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“…Tian proposed a Quasi-D-shaped layout PCF-SPR biosensor with ITO-Graphene coating. When the RI is in the range of 1.21-1.32, the maximum sensitivity is 12 000 nm/RIU [22].…”

Section: Introductionmentioning

confidence: 99%

High sensitivity concave-shaped photonic crystal fiber sensor based on surface plasmon resonance

Liu

Xia

et al. 2022

Laser Phys.

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A novel concave-shaped photonic crystal fiber sensor with double loss peaks based on surface plasmon resonance is proposed, whose properties are investigated by the finite element method. Gold can be utilized to generate excitation between the core mode and surface plasmon polariton mode. The simulation results indicate that in the wavelength range of 1.2 to 2.2 μm, the proposed sensor could detect the refractive index (RI) in the range of 1.18–1.30, the wavelength sensitivity of the primary loss peak could reach up to 18 000 nm/RIU and the corresponding resolution is 5.56 × 10−6 RIU in the RI range from 1.26 to 1.27. In addition, the double loss peaks could improve the detection accuracy, and the trough wavelength variation range is small, indicating that the proposed sensor is relatively stable, which improves the practicability of the sensor. This work could have a wide application value in the detection of medical testing, biomolecules, and organic chemistry.

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A Photonic Crystal Fiber-Based Biosensor with Quasi-D-shaped Layout and ITO-Graphene Combination

Cited by 25 publications

References 26 publications

High sensitivity and wide detection range temperature and refractive index photonic crystal fiber sensor

High sensitivity and wide detection range temperature and refractive index photonic crystal fiber sensor

The Anodization of Thin Titania Layers as a Facile Process towards Semitransparent and Ordered Electrode Material

High sensitivity concave-shaped photonic crystal fiber sensor based on surface plasmon resonance

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