嵌入式纳米金阵列的表面等离子共振传感特性研究

摘要/Abstract

摘要： 从本征值方程出发，结合FDTD算法对嵌入二氧化硅衬底的菱形纳米金阵列的表面等离子共振传感特性进行研究，导出共振模式随嵌入深度变化的关系式。计算结果与数值模拟一致，验证了金纳米颗粒阵列上下介质的不对称性可以等效为单层介质光栅的合理性。对透射谱中产生多个共振峰的物理机制与影响因素进行理论分析，并进一步探讨透射谱与嵌入深度、长短轴比例、周期尺寸等参数的关系，以及阵列结构的传感性能特点，可为设计制作多波段工作的SPR传感器基底提供理论依据。

关键词: 局域表面等离子体共振, 阵列结构, 透射谱, 导模共振, 传感, local surface plasmon resonance, nanoparticles array, transmission spectrum, guided-mode resonance, sensing

Abstract: By using the eigenvalue equation and finite-difference time-domain (FDTD) algorithm, the sensing characteristics of surface plasmon resonance based on the rhombic gold nanoparticles array, embedded in the silica substrate, have been studied. An analytical expression for the variation of resonance mode with the embedding depth is derived. Its predicted results are consistent with the numerical simulations, which prove the reasonability and validity of the physical model, in which the asymmetry of the upper and lower dielectrics in the surface of gold nanoparticles array can be equivalent to monolayer dielectric grating. The physical mechanism and influence factors of the phenomenon that multi resonance peaks occur in the transmission spectrum are explained theoretically, and the reasons that transmission spectrum is sensitive to the embedding depth, axial ratio and array period, are also discussed. In addition, the sensing performance of the array structure is analyzed further, which could provide the way to design multi-band substrate for SPR sensor.

中图分类号:

孔令超刘瑜. 嵌入式纳米金阵列的表面等离子共振传感特性研究[J]. J4, 2017, 34(2): 241-246.

参考文献

[1] Homola J, Yee S S, Gauglitz G. Surface plasmon resonance sensors: review[J]. Sensors & Actuators B Chemical, 1999, 54(1):3-15.
[2] Choi I, Choi Y. Plasmonic Nanosensors: Review and Prospect[J]. IEEE Journal of Selected Topics in Quantum Electronics, 2012, 18(3):1110-1121.
[3] Mohseni S, Moghadam T T, Dabirmanesh B, et al. Development of a label-free SPR sensor for detection of matrixmetalloproteinase-9 by antibody immobilization on carboxymethyldextran chip[J]. Biosensors & Bioelectronics, 2016, 81(2):510-516.
[4] Ashley J, Piekarska M, Segers C, et al. An SPR based sensor for allergens detection[J]. Biosensors & Bioelectronics, 2016, 81(3):505-508
[5] Li Z, Chen T, Zhang Z, et al. Highly sensitive surface plasmon resonance sensor utilizing a long period grating with photosensitive cladding.[J]. Applied Optics, 2016, 55(6):123-124.
[6] Cai G, Li W, Chen Y, et al. Modeling and Design of a Plasmonic Sensor for High Sensing Performance and Clear Registration[J]. IEEE Photonics Journal, 2016, 8(1):1-1.
[7] Chen S, Liu Y, Liu Q, et al. Localized Surface Plasmon Resonance-based Micro-capillary Biosensor[J]. IEEE Photonics Technology Letters, 2016,2(2):2195-2198.
[8] Xu Jie, Wang Hanling, Huang Zhixiang,et al.Optical properties of gold nanoshells with gain medium[J]. Chinsese Journal of Quantum Electronics (量子电子学报), 2015, 32(5):513-518.
[9] Gao Jun, Han Ming.Tuning surface plasmon resonance by controlling silver nanoparticle array[J]. Chinsese Journal of Quantum Electronics (量子电子学报), 2015, 32(2):222-227.
[10] Hayashi S, Nesterenko D V, Rahmouni A, et al. Observation of Fano line shapes arising from coupling between surface plasmon polariton and waveguide modes[J]. Applied Physics Letters, 2016, 108(5):2257.
[11] Wen K, Hu Y, Chen L, et al. Single/Dual Fano Resonance Based on Plasmonic Metal-Dielectric-Metal Waveguide[J]. Plasmonics, 2016, 11(1):315-321.
[12] Chen J, Xu R, Mao P, et al. Realization of Fanolike Resonance Due to Diffraction Coupling of Localized Surface Plasmon Resonances in Embedded Nanoantenna Arrays[J]. Plasmonics, 2015, 10(2):341-346.
[13] Bossardgiannesini L, Cruguel H, Lacaze E, et al. Plasmonic properties of gold nanoparticles on silicon substrates: Understanding Fano-like spectra observed in reflection[J]. Applied Physics Letters, 2016, 109(11):160-162.
[14] He J, Zhang X. Synchronous Tuning of Twined Resonance Modes with Controllable Spectral Separation in Plasmonic Gratings[J]. Plasmonics, 2016,11(3):1-6.
[15] Cai Z J, Liu G Q, Liu Z Q, et al. Subradiant, Superradiant Plasmon Modes and Fano Resonance in a Multilayer Nanocylinder Array Standing on a Thin Metal Film[J]. Plasmonics, 2016, 11(2):683-688.
[16] Auguié B, Barnes W L. Collective resonances in gold nanoparticle arrays.[J]. Physical Review Letters, 2008, 101(14):28-28.
[17] Woyessa G, Nielsen K, Stefani A, et al. Temperature insensitive hysteresis free highly sensitive polymer optical fiber Bragg grating humidity sensor.[J]. Optics Express, 2016, 24(2):253-254.
[18] P. Karasiński. Sensor properties of planar waveguide structures with grating couplers[J]. Opto-Electronics Review, 2016, 15(3):168-178.
[19] Iqbal T, Afsheen S. Extraordinary optical transmission: Role of the slit width in 1D metallic grating on higher refractive index substrate[J]. Current Applied Physics, 2016, 16(4):453-458.