A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band
Abstract
:1. Introduction
2. Structural Design and Analysis
2.1. Structural Design
2.2. Performance Analysis
3. Simulation Results and Discussion
3.1. Structural Optimization of the Proposed Sensing Structure
3.1.1. Analysis of PVDF Thickness t
3.1.2. Analysis of Polishing Depth h
3.1.3. Analysis of Air Hole Diameter D
3.1.4. Analysis of Air Hole Diameter d1 and d2
3.2. Sensor Performance at Optimized Parameters
3.3. Analysis of Different Biomaterials
3.4. Response of Linearity
3.5. Fabrication Tolerance
3.5.1. Fabrication Tolerance for ±1–2% Variation in D
3.5.2. Fabrication Tolerance for ±1–2% Variation in d1
3.5.3. Fabrication Tolerance for ±1–2% Variation in d2
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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na | AS (RIU−1) | WS (μm/RIU) | SR (RIU) | FWHM (μm) | FOM (RIU−1) |
---|---|---|---|---|---|
1.32 | −27.40 | 137.00 | 7.30 × 10−7 | 12.64 | 10.84 |
1.33 | −29.41 | 119.00 | 8.40 × 10−7 | 12.02 | 9.90 |
1.34 | −32.40 | 140.00 | 7.14 × 10−7 | 11.23 | 12.47 |
1.35 | −38.38 | 142.00 | 7.04 × 10−7 | 10.15 | 13.99 |
1.36 | −66.01 | 143.00 | 6.99 × 10−7 | 8.54 | 16.74 |
1.37 | −51.31 | 207.00 | 4.83 × 10−7 | 5.25 | 39.42 |
1.38 | −44.15 | 233.00 | 4.29 × 10−7 | 6.94 | 33.57 |
1.39 | −38.15 | 236.00 | 4.24 × 10−7 | 8.48 | 27.83 |
1.40 | −34.14 | 241.00 | 4.15 × 10−7 | 10.22 | 23.58 |
1.41 | −31.13 | 269.00 | 3.72 × 10−7 | 12.13 | 22.17 |
1.42 | −28.73 | 274.00 | 3.65 × 10−7 | 14.10 | 19.43 |
1.43 | −26.71 | 303.00 | 3.30 × 10−7 | 16.29 | 28.60 |
1.44 | −24.98 | 335.00 | 2.98 × 10−7 | 18.65 | 17.96 |
1.45 | 21.27 |
Reference | RI Range | Operating Wavelength (μm) | AS (RIU−1) | WS (μm/RIU) | SR (RIU) |
---|---|---|---|---|---|
[42] | 1.00–1.03 | 300–460 | −44.84 | 110.00 | 2.60 × 10−4 |
[37] | 1.33–1.40 | 150–300 | - | 715.59 | 1.40 × 10−7 |
[20] | 1.33–1.40 | 0.55–0.90 | 2080.00 | 10.00 | 4.80 × 10−6 |
[21] | 1.35–1.40 | 0.55–1.10 | 1443.00 | 8.00 | 1.25 × 10−5 |
[49] | 1.30–1.40 | 0.60–1.65 | 947.00 | 22.80 | 4.38 × 10−6 |
This work | 1.32–1.45 | 235–285 | −66.01 | 335.00 | 8.40 × 10−7 |
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Zhang, Y.; Yao, Y.; Guang, Z.; Xue, J.; Wang, Q.; Gong, J.; Ali, Z.; Yang, Z. A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band. Photonics 2023, 10, 1159. https://doi.org/10.3390/photonics10101159
Zhang Y, Yao Y, Guang Z, Xue J, Wang Q, Gong J, Ali Z, Yang Z. A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band. Photonics. 2023; 10(10):1159. https://doi.org/10.3390/photonics10101159
Chicago/Turabian StyleZhang, Yani, Yiming Yao, Zhe Guang, Jia Xue, Qiuyang Wang, Jiaqin Gong, Zohaib Ali, and Zhongtian Yang. 2023. "A High-Sensitivity Fiber Biosensor Based on PVDF-Excited Surface Plasmon Resonance in the Terahertz Band" Photonics 10, no. 10: 1159. https://doi.org/10.3390/photonics10101159