Fig. 1: BICs and GMRs supported by the metasurface of composite supercells. | Light: Science & Applications

Fig. 1: BICs and GMRs supported by the metasurface of composite supercells.

From: Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation

Fig. 1: BICs and GMRs supported by the metasurface of composite supercells.

a Schematic representation illustrating the light field trapping of nanohole tetramer structures. b, c Depictions of nanohole supercells, which support non-radiative BIC and GMR modes under conditions of centroid symmetry protection and diagonal area conservation. d, f, h, j Distribution of Q-factors in momentum space, revealing the modes associated with BICs and GMRs supported by composite nanohole structures. e, g Polarization vectors in k-space; i, k Variation of Q-factor as a function of k value for different hole radii

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