局域等离激元复合谐振器中的高灵敏度传感器
贵州黔南科技学院, 计算机与电子信息学院, 贵州惠水 550600
| 摘 要： | 表面等离激元（Surface Plasmon Polaritons, SPP）是电磁振荡与金属中电子振荡强烈耦合产生的混合电磁模，但在微波和太赫兹波段，因金属趋肤效应减弱、有效电导率降低，难以直接激发。局域型人工表面等离激元（Localized Spoof Surface Plasmonic, LSSP）作为在此频段实现类似SPP电磁特性的功能材料，具备深度波长压缩、高灵敏度等独特优势。本论文围绕可调谐的LSSP器件展开研究，基于LSSP强色散和高场束缚性，设计出高灵敏度、高优值系数（Figures of Merit, FOM）的微波传感器，被测介质介电常数在2 - 4变化时，偶极模频移达270 MHz，灵敏度为135 MHz/RIU，引入裂纹后，在保持灵敏度的同时，偶极模FOM值提高约4.4%，激励效率提升22%。LSSP复合谐振器凭借超紧凑有效波长、低成本制造工艺和高品质因数（Quality Factor, Q），在微量生物医学和化学传感等微波无损检测领域极具应用潜力，实现了对局域型人工等离激元电磁特性的精确调控。 |
| 关 键 词： | 铁电复合谐振器; LSSP; 介电性能; 高灵敏度传感器; FOM |
| DOI： | 10.57237/j.cst.2025.04.004 |
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收稿日期: 2025-10-27
接受日期: 2025-12-11
在线出版日期: 2025-12-24
High-Sensitivity Sensor in Localized Plasmonic Hybrid Resonator
Computer and Electronic Information College, Guizhou Qiannan University of Science and Technology, Huishui 550600, China
| Abstract: | Surface Plasmon Polaritons (SPP) are hybrid electromagnetic modes generated by the strong coupling of electromagnetic oscillations and electronic oscillations in metals. However, in the microwave and terahertz bands, due to the weakened skin effect of metals and the reduced effective electrical conductivity, they are difficult to be directly excited. Localized Spoof Surface Plasmonic (LSSP), as a functional material that achieves electromagnetic characteristics similar to SPP in this frequency band, has unique advantages such as deep wavelength compression and high sensitivity. This thesis focuses on the research of tunable LSSP devices. Based on the strong dispersion and high field restraint of LSSP, a microwave sensor with high sensitivity and high Figures of Merit (FOM) is designed. When the dielectric constant of the measured medium varies from 2 to 4, the dipole mode frequency shifts up to 270 MHz. With a sensitivity of 135 MHz/RIU, after introducing a crack, the FOM value of the dipole mode increased by approximately 4.4% while maintaining the sensitivity, and the excitation efficiency improved by 22%. The LSSP composite resonator, with its ultra-compact effective wavelength, low-cost manufacturing process and high Quality Factor (Q), has great application potential in microwave non-destructive testing fields such as micro-biomedicine and chemical sensing, achieving precise regulation of the electromagnetic characteristics of local artificial plasmons. |
| Keywords: | Ferroelectric Composite Resonator; LSSP; Dielectric Properties; High-sensitivity Sensor; FOM |
基金
| 1. | 贵州省高等学校本科教学内容和课程体系改革项目 (GZJG2024456) |
参考文献
| [1] | Pendry J B, Holden A J Stewart, W J, et al. Extremely low frequency plasmons in metallic mesostructures [J]. Physical Review Letters, 1996, 76(25): 4773. https://doi.org/10.1103/PhysRevLett.76.4773 |
| [2] | Zayats A V, Smolyaninov I I, Maradudin A A. Nano-optics of surface plasmon polaritons [J]. Physics Reports, 2005, 408(3-4): 131-314. https://doi.org/10.1016/j.physrep.2004.11.001 |
| [3] | Garcia-Vidal F J, Martin-Moreno L, Pendry J B. Surfaces with holes in them: new plasmonic metamaterials [J]. Journal of Optics A: Pure and Applied Optics, 2005, 7(2): S97. https://doi.org/10.1126/science.1098999 |
| [4] | X Shen, T J CUI. Ultrathin plasmonic metamaterial for spoof localized surface plasmons: Spoof localized surface plasmons [J]. Laser & Photonics Reviews, 2014, 8(1): 137-145. https://doi.org/10.1002/lpor.201300144 |
| [5] | Zhang X, Cui T J. Deep-subwavelength and high-Q trapped mode induced by symmetry-broken in toroidal plasmonic resonator [J]. IEEE Transactions on Antennas and Propagation, 2020, 69(4): 2122-2129. https://doi.org/10.1109/TAP.2020.3026480 |
| [6] | 朱海涛,王闯, 余柯涵. 拉锥光纤表面等离激元共振高性能传感器 [J].仪表技术与传感器, 2024, (10): 7-11. https://doi.org/10.3969/j.issn.1002-1841.2024.10.002 |
| [7] | X Zhang, J W Zhu, T J CUI. An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using a Smartphone [J]. Engineering, 2023, S2095809923002485. https://doi.org/10.1016/j.eng.2023.05.024 |
| [8] | Homola J. Present and future of surface plasmon resonance biosensors [J]. Analytical and Bioanalytical Chemistry, 2003, 377: 528-539. https://doi.org/10.1007/s00216-003-2101-0 |
| [9] | Xu H T, Guan D F, Yang Z B, et al. An ultra‐wideband out‐of‐phase power divider based on odd‐mode spoof surface plasmon polariton [J]. International Journal of RF and Microwave Computer- Aided Engineering, 2021, 31(4): e22583. https://doi.org/10.1002/mmce.22583 |
| [10] | Liu X, Feng Y, Chen K, et al. Planar surface plasmonic waveguide devices based on symmetric corrugated thin film structures [J]. Optics Express, 2014, 22(17): 20107-20116. https://doi.org/10.1364/OE.22.020107 |
| [11] | Zhu J W, Zhang X, T J CUI. Ultra-Sensitive and Real-Time Sensing Based on Deep-Subwavelength Spoof Localized Surface Plasmons // 2021 Computing Communications and IoT Applications (ComComAp) [J]. IEEE, 2021, 352-355. https://doi.org/10.1109/ComComAp53641.2021.9652993 |
| [12] | Yang L, Liu H, Cai B, et al. Miniaturized broadband high out-of-band rejection bandpass filter based on spoof surface plasmon polaritons with defected ground structure [J]. Scientific Reports, 2024, 14(1): 26722. https://doi.org/10.1038/s41598-024-77705-y |
| [13] | Zhang X, Yan R T, T J CUI. High-FOM resonance in single hybrid plasmonic resonator via electromagnetic modal interference [J]. IEEE Transactions on Antennas and Propagation, 2020, 68(8): 6447-6451. https://doi.org/10.1109/TAP.2020.2970037 |
| [14] | Ding C, Meng F Y, Han J Q, et al. Design of filtering tunable liquid crystal phase shifter based on spoof surface plasmon polaritons in PCB technology [J]. IEEE transactions on components, packaging and manufacturing technology, 2019, 9(12): 2418-2426. https://doi.org/10.1109/TCPMT.2019.2943149 |
| [15] | W J, LI Y, D F. High-Order Localized Spoof Surface Plasmons Resonator for High Sensitivity Sensing [J]. IEEE Sensors Journal, 2022, 22(13): 12861-12868. https://doi.org/10.1109/JSEN.2022.3180419 |
| [16] | Jaiswal R K, Pandit N, Pathak N P. Spoof surface plasmon polaritons based reconfigurable band-pass filter [J]. IEEE Photonics Technology Letters, 2018, 31(3): 218-221. https://doi.org/10.1109/LPT.2018.2889007 |
| [17] | Guo Y J, Xu K D, Deng X, et al. Millimeter-wave on-chip bandpass filter based on spoof surface plasmon polaritons [J]. IEEE Electron Device Letters, 2020, 41(8): 1165-1168. https://doi.org/10.3389/fphy.2021.754510 |
