Dataset to support the publication 'Plasmonic anapole metamaterial for refractive index sensing'

This Dataset supports the publication of 'Plasmonic anapole metamaterial for refractive index sensing' published in PhotoniX (issn: 2662-1991). DOI of the article: 10.1186/s43074-022-00069-x The data includes related information to Fig 2, 3 and 4. Fig. 2 shows Electromagnetic responses of two components of the plasmonic anapole metamaterial. (b) transmission (blue curve) and reflection (red curve) spectra, (c) multipole decomposition and phases of electric dipole and toroidal dipole moments, and (d) normalized yz-plane electric field and magnetic field distributions of the dumbbell-perforated gold film placed on the dielectric substrate. Fig. 3 shows Electromagnetic responses of the plasmonic anapole metamaterial. (a) Measured and (b) simulated transmission (blue curve) and reflection (red curve) spectra, (c) multipole decomposition, (d) phases of electric dipole and toroidal dipole moments, and (e) normalized electric field and magnetic field distributions of the plasmonic anapole metamaterial in the yz-plane and the xy-plane. Grey dotted lines in Fig. 3b-d denote the resonant wavelength of anapole mode. White dashed arrows depict the orientations of the magnetic field. The xy cut plane is located in the middle of the upper dumbbell-perforated gold film. All the geometric parameters are identical to those in Fig. 2. Fig. 4 shows Refractive index sensing application of the plasmonic anapole metamaterial. (a) Measured and (b) simulated transmission and reflection spectra with variable ambient refractive index from 1.30 to 1.39 with a step of 0.01. Dark (light) blue and red correspond to transmission and reflection at refractive index n = 1.30 (1.39). (c) The resonant wavelengths of the anapole mode from experimental and simulation results as functions of the ambient refractive index. The black solid lines represent the linear fitting results.

本数据集用于支撑发表于《PhotoniX》（ISSN: 2662-1991）的论文《等离子体无极子超材料用于折射率传感》（Plasmonic anapole metamaterial for refractive index sensing），论文DOI为10.1186/s43074-022-00069-x。本数据集包含图2、图3与图4的相关配套数据。图2展示了等离子体无极子超材料（plasmonic anapole metamaterial）两种组分的电磁响应：(b) 透射（蓝色曲线）与反射（红色曲线）光谱；(c) 多极分解（multipole decomposition）结果以及电偶极矩与环偶极矩（toroidal dipole moment）的相位分布；(d) 置于介质基底上的哑铃形穿孔金膜的归一化yz平面电场与磁场分布。图3展示了该等离子体无极子超材料的电磁响应：(a) 实测与(b) 仿真得到的透射（蓝色曲线）与反射（红色曲线）光谱；(c) 多极分解结果；(d) 电偶极矩与环偶极矩的相位分布；(e) 该等离子体无极子超材料在yz平面与xy平面的归一化电场与磁场分布。图3b至3d中的灰色虚线代表无极子模式（anapole mode）的谐振波长。白色虚线箭头标示了磁场的取向。xy截面位于上层哑铃形穿孔金膜的中心位置。所有几何参数均与图2保持一致。图4展示了该等离子体无极子超材料的折射率传感应用：(a) 实测与(b) 仿真得到的透射与反射光谱，其中环境折射率在1.30至1.39范围内以0.01为步长变化。深（浅）蓝色与红色分别对应折射率n=1.30（n=1.39）时的透射与反射信号。(c) 实验与仿真结果中，无极子模式的谐振波长随环境折射率的变化关系。黑色实线代表线性拟合结果。