Fig. 4: Different metamaterials for RI sensing.
From: Surface-enhanced spectroscopy technology based on metamaterials
a Plasmonic sensors of a 2D hexagonal gold array and the interfacial RI obtained by fitting the experimentally acquired reflectance spectra. Reproduced with permission114. Copyright 2020, American Chemical Society. b A plasma gas sensor for the detection of cadaveric amines. Reproduced with permission117. Copyright 2023, American Chemical Society. c All-dielectric silicon crescent metamaterial and second-order resonance shifts. Reproduced with permission119. Copyright 2021, Wiley. d Dual-rectangular silicon pillar BIC metamaterial used for phase-interrogation RI sensing. Reproduced with permission121. Copyright 2023, American Chemical Society. e A hybrid cylindrical tetramer metamaterial which is based on two symmetry-protected qBIC modes. Reproduced with permission123. Copyright 2024, American Chemical Society. f Plasma microwell array system and the process of time-lapse plasmonic intensity images. Reproduced with permission126. Copyright 2023, Springer
