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.