Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film
Abstract
:1. Introduction
2. Calculation Methods
2.1. Three-Layer Model
2.2. Reflectance Coefficient
2.3. Performance Parameters
3. Results and Discussions
3.1. The Refractive Index of Porous Silica
3.2. The Effect of Porous Silica Film on the SPR Sensor
3.2.1. Porous Silica with 20% Porosity (nps = 1.365)
3.2.2. Porous Silica with 40% Porosity (nps = 1.270)
3.2.3. Porous Silica with 60% Porosity (nps = 1.176)
3.2.4. Porous Silica with 80% Porosity (nps = 1.086)
3.2.5. Summary
3.2.6. Origin of FOM Enhancement
3.3. The Effect of a Porous Silica Film on an SPR Sensor
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Thickness of Porous Silica Film (nm) | Resonance Angle (°) | Depth of Dip | Sensitivity (°/RIU) | FWHM (°) | FOM (RIU−1) |
---|---|---|---|---|---|
0 | 54.650 | 3.27 × 10−4 | 67.9 | 1.513 | 44.888 |
20 | 55.715 | 3.58 × 10−4 | 53.7 | 1.751 | 30.654 |
40 | 55.974 | 3.65 × 10−4 | 43.8 | 1.784 | 24.550 |
Thickness of Porous Silica Film (nm) | Resonance Angle (°) | Depth of dip | Sensitivity (°/RIU) | FWHM (°) | FOM (RIU−1) |
---|---|---|---|---|---|
0 | 54.650 | 3.27 × 10−4 | 67.9 | 1.513 | 44.888 |
20 | 54.493 | 3.22 × 10−4 | 50.7 | 1.467 | 34.565 |
40 | 53.837 | 3.00 × 10−4 | 41.5 | 1.320 | 31.443 |
Thickness of Porous Silica Film (nm) | Resonance Angle (°) | Depth of Dip | Sensitivity (°/RIU) | FWHM (°) | FOM (RIU−1) |
---|---|---|---|---|---|
0 | 54.650 | 3.27 × 10−4 | 67.9 | 1.513 | 44.888 |
20 | 53.299 | 2.82 × 10−4 | 48.1 | 1.195 | 40.242 |
40 | 52.034 | 2.39 × 10−4 | 40.8 | 0.910 | 44.129 |
Thickness of Porous Silica Film (nm) | Resonance Angle (°) | Depth of Dip | Sensitivity (°/RIU) | FWHM (°) | FOM (RIU−1) |
---|---|---|---|---|---|
0 | 54.650 | 3.27 × 10−4 | 67.9 | 1.513 | 44.888 |
20 | 52.189 | 2.44 × 10−4 | 46.2 | 0.934 | 49.464 |
40 | 50.701 | 1.94 × 10−4 | 42.9 | 0.505 | 84.966 |
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Meng, Q.-Q.; Zhao, X.; Lin, C.-Y.; Chen, S.-J.; Ding, Y.-C.; Chen, Z.-Y. Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film. Sensors 2017, 17, 1846. https://doi.org/10.3390/s17081846
Meng Q-Q, Zhao X, Lin C-Y, Chen S-J, Ding Y-C, Chen Z-Y. Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film. Sensors. 2017; 17(8):1846. https://doi.org/10.3390/s17081846
Chicago/Turabian StyleMeng, Qing-Qing, Xin Zhao, Cheng-You Lin, Shu-Jing Chen, Ying-Chun Ding, and Zhao-Yang Chen. 2017. "Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film" Sensors 17, no. 8: 1846. https://doi.org/10.3390/s17081846
APA StyleMeng, Q.-Q., Zhao, X., Lin, C.-Y., Chen, S.-J., Ding, Y.-C., & Chen, Z.-Y. (2017). Figure of Merit Enhancement of a Surface Plasmon Resonance Sensor Using a Low-Refractive-Index Porous Silica Film. Sensors, 17(8), 1846. https://doi.org/10.3390/s17081846