{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Zhou C"],"funding":["National Natural Science Foundation of China (National Science Foundation of China)"],"pagination":["84"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12830976"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["15(1)"],"pubmed_abstract":["Ultrahigh-Q optical resonances are the cornerstone of next-generation nanophotonic technologies, but their simultaneous realization of robustness and on-chip practicality remains a significant challenge. In this work, we present tetramer composite metasurfaces capable of supporting two distinct classes of ultrahigh-Q resonances: centroid symmetry-protected bound states in the continuum (SP-BICs) and area-conserved guided-mode resonances (GMRs). By employing a four-hole supercell design, we demonstrate that centering each hole within its subcell preserves C<sub>4v</sub> symmetry, thereby enabling SP-BICs. Controlled lateral displacement transforms them into quasi-BICs with Q > 10⁶. Independently, enforcing diagonal-hole area conservation within the super unit cell generates degenerate GMRs "],"journal":["Light, science & applications"],"pubmed_title":["Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation."],"pmcid":["PMC12830976"],"funding_grant_id":["62222514","62350073","12164008","12474377"],"pubmed_authors":["Li G","Jin R","Huang J","Zhou C","He H","Huang L"],"additional_accession":[]},"is_claimable":false,"name":"Robust ultrahigh-Q resonances in tetramer metasurfaces through centroid symmetry protection and area conservation.","description":"Ultrahigh-Q optical resonances are the cornerstone of next-generation nanophotonic technologies, but their simultaneous realization of robustness and on-chip practicality remains a significant challenge. In this work, we present tetramer composite metasurfaces capable of supporting two distinct classes of ultrahigh-Q resonances: centroid symmetry-protected bound states in the continuum (SP-BICs) and area-conserved guided-mode resonances (GMRs). By employing a four-hole supercell design, we demonstrate that centering each hole within its subcell preserves C<sub>4v</sub> symmetry, thereby enabling SP-BICs. Controlled lateral displacement transforms them into quasi-BICs with Q > 10⁶. Independently, enforcing diagonal-hole area conservation within the super unit cell generates degenerate GMRs ","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Jan","modification":"2026-06-06T22:30:26.78Z","creation":"2026-06-06T03:10:45.533Z"},"accession":"S-EPMC12830976","cross_references":{"pubmed":["41577661"],"doi":["10.1038/s41377-025-02164-7"]}}