{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Djeghdi K"],"funding":["Adolphe Merkle Foundation","Swiss National Science Foundation","European Research Council"],"pagination":["2509-2517"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC10933740"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["20(11)"],"pubmed_abstract":["While artificial photonic materials are typically highly ordered, photonic structures in many species of birds and insects do not possess a long-range order. Studying their order-disorder interplay sheds light on the origin of the photonic band gap. Here, we investigated the scale morphology of the <i>Anoplophora graafi</i> longhorn beetle. Combining small-angle X-ray scattering and slice-and-view FIB-SEM tomography with molecular dynamics and optical simulations, we characterised the chitin sphere assemblies within blue and green <i>A. graafi</i> scales. The low volume fraction of spheres and the number of their nearest neighbours are incompatible with any known close-packed sphere morphology. A short-range diamond lattice with long-range disorder best describes the sphere assembly, which will inspire the development of new colloid-based photonic materials."],"journal":["Soft matter"],"pubmed_title":["<i>Anoplophora graafi</i> longhorn beetle coloration is due to disordered diamond-like packed spheres."],"pmcid":["PMC10933740"],"funding_grant_id":["PrISMoID","NCCR Bio-inspired Materials","833895"],"pubmed_authors":["Steiner U","Bauernfeind V","Djeghdi K","Schumacher C","Wilts BD","Gunkel I"],"additional_accession":[]},"is_claimable":false,"name":"<i>Anoplophora graafi</i> longhorn beetle coloration is due to disordered diamond-like packed spheres.","description":"While artificial photonic materials are typically highly ordered, photonic structures in many species of birds and insects do not possess a long-range order. Studying their order-disorder interplay sheds light on the origin of the photonic band gap. Here, we investigated the scale morphology of the <i>Anoplophora graafi</i> longhorn beetle. Combining small-angle X-ray scattering and slice-and-view FIB-SEM tomography with molecular dynamics and optical simulations, we characterised the chitin sphere assemblies within blue and green <i>A. graafi</i> scales. The low volume fraction of spheres and the number of their nearest neighbours are incompatible with any known close-packed sphere morphology. A short-range diamond lattice with long-range disorder best describes the sphere assembly, which will inspire the development of new colloid-based photonic materials.","dates":{"release":"2024-01-01T00:00:00Z","publication":"2024 Mar","modification":"2026-04-12T15:29:58.499Z","creation":"2025-04-04T12:59:14.373Z"},"accession":"S-EPMC10933740","cross_references":{"pubmed":["38389437"],"doi":["10.1039/d4sm00068d"]}}