{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Sato R"],"funding":["Danmarks Grundforskningsfond (Danish National Research Foundation)","Villum Fonden (Villum Foundation)","EC | Horizon 2020 Framework Programme (EU Framework Programme for Research and Innovation H2020)"],"pagination":["10544"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC11615403"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["15(1)"],"pubmed_abstract":["Bound states in the continuum are optical modes with extremely high-quality factors and narrow resonances, which exist in the dispersion spectrum of the radiative region above the light line. A unique bound state in the continuum is supported at the edge of truncated photonic crystals, which is a type of a Fabry-Pérot type bound state in the continuum, but has never been observed in experiments. Here, we demonstrate the bound states in the continuum supported at the edge array of silicon (Si) pillars whose diameter is bigger than that of the rest of a Si-pillar two-dimensional photonic crystal. We also show the tunability of the resonance and surface sensitivity of the mode when Si pillars are conformally coated with nanometer-thick aluminium oxide films. The presence of an oxide nanofilm improves the quality factor by over 60 % and shifts the resonance wavelength. Such behavior signifies the substantial potential of the bound states in the continuum on two-dimensional photonic crystals for post-fabrication tuning of the quality factor and surface sensing applications."],"journal":["Nature communications"],"pubmed_title":["Observation of edge bound states in the continuum at truncated silicon pillar photonic crystal."],"pmcid":["PMC11615403"],"funding_grant_id":["00037822","DNRF147","964808"],"pubmed_authors":["Lopez Aymerich E","Sato R","Malureanu R","Lavrinenko AV","Edith Svendsen W","Takayama O","Nikitin M","Vinther Bertelsen C"],"additional_accession":[]},"is_claimable":false,"name":"Observation of edge bound states in the continuum at truncated silicon pillar photonic crystal.","description":"Bound states in the continuum are optical modes with extremely high-quality factors and narrow resonances, which exist in the dispersion spectrum of the radiative region above the light line. A unique bound state in the continuum is supported at the edge of truncated photonic crystals, which is a type of a Fabry-Pérot type bound state in the continuum, but has never been observed in experiments. Here, we demonstrate the bound states in the continuum supported at the edge array of silicon (Si) pillars whose diameter is bigger than that of the rest of a Si-pillar two-dimensional photonic crystal. We also show the tunability of the resonance and surface sensitivity of the mode when Si pillars are conformally coated with nanometer-thick aluminium oxide films. The presence of an oxide nanofilm improves the quality factor by over 60 % and shifts the resonance wavelength. Such behavior signifies the substantial potential of the bound states in the continuum on two-dimensional photonic crystals for post-fabrication tuning of the quality factor and surface sensing applications.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Dec","modification":"2025-04-04T00:43:58.136Z","creation":"2025-04-04T00:43:58.136Z"},"accession":"S-EPMC11615403","cross_references":{"pubmed":["39627273"],"doi":["10.1038/s41467-024-54929-0"]}}