光学学报, 2018, 38 (2): 0228002, 网络出版: 2018-08-30
纳米多孔金膜表面等离子体共振传感器的制备与表征 
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Preparation and Characterization of Nanoporous Gold Film Based Surface Plasmon Resonance Sensor
图 & 表
图 1. (a)基于Kretschmann结构的波长检测型SPR传感装置示意图;(b) NPGF/空气界面上的PSPR效应示意图
Fig. 1. (a) Schematic diagram of the wavelength-interrogated SPR sensing device based on Kretschmann structure; (b) schematic diagram of the PSPR on the NPGF/air interface
图 2. (a) NPGF的SEM照片;(b) SEM照片经Image J软件自动阈值处理后得到的黑白图像
Fig. 2. (a) SEM image of the NPGF; (b) black-white image obtained after automatical threshold processing of the SEM image with the Image J software
图 3. (a)实验测得的NPGF在空气中的SPR光谱;(b)利用菲涅耳公式结合Bruggeman介电常数近似方程仿真得到的SPR光谱
Fig. 3. (a) SPR spectra of the NPGF in the air measured by the experiment; (b) simulated SPR spectra using the combination of the Fresnel formula and the Bruggeman dielectric constant approximation equation
图 4. (a) θ=-12°时,NPGF-SPR传感器从不同浓度水溶液中吸附Pb2+离子后产生的光谱响应;(b) 共振波长变化量与Pb2+浓度的依赖关系
Fig. 4. (a) Spectral responses of the NPGF-SPR sensor to Pb2+ ions adsorbed from aqueous solutions of different concentrations when θ=-12°; (b) resonant-wavelength shifts as a function of the Pb2+ concentration
图 5. θ=-18°时,致密金膜SPR传感器浓度为500 nmol·L-1的水溶液中吸附Pb2+离子后产生的光谱响应
Fig. 5. Spectral response of the dense gold film based SPR sensor to Pb2+ ions adsorbed from an aqueous solution of 500 nmol·L-1 concentration when θ=-18°
图 6. (a) θ=-12°时,NPGF-SPR传感器从不同浓度水溶液中吸附三聚氰胺分子后产生的光谱响应;(b)共振波长变化量与三聚氰胺浓度的依赖关系
Fig. 6. (a) Spectral responses of the NPGF-SPR sensor to melamine molecules adsorbed from aqueous solutions with different concentrations when θ=-12°; (b) resonant-wavelength shifts as a function of the melamine concentration
王丽, 万秀美, 高然, 逯丹凤, 祁志美. 纳米多孔金膜表面等离子体共振传感器的制备与表征[J]. 光学学报, 2018, 38(2): 0228002. Li Wang, Xiumei Wan, Ran Gao, Danfeng Lu, Zhimei Qi. Preparation and Characterization of Nanoporous Gold Film Based Surface Plasmon Resonance Sensor[J]. Acta Optica Sinica, 2018, 38(2): 0228002.
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