3D Tomographic Analysis of the Order-Disorder Interplay in the Pachyrhynchus congestus mirabilis Weevil.
3D structure characterization
FIB-tomography
Pt backfilling
biophotonics
disorder
Journal
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
ISSN: 2198-3844
Titre abrégé: Adv Sci (Weinh)
Pays: Germany
ID NLM: 101664569
Informations de publication
Date de publication:
09 2022
09 2022
Historique:
revised:
15
06
2022
received:
13
04
2022
pubmed:
20
7
2022
medline:
17
9
2022
entrez:
19
7
2022
Statut:
ppublish
Résumé
The bright colors of Pachyrhynchus weevils originate from complex dielectric nanostructures within their elytral scales. In contrast to previous work exhibiting highly ordered single-network diamond-type photonic crystals, here, it is shown by combining optical microscopy and spectroscopy measurements with 3D focused ion beam (FIB) tomography that the blue scales of P. congestus mirabilis differ from that of an ordered diamond structure. Through the use of FIB tomography on elytral scales filled with platinum (Pt) by electron beam-assisted deposition, it is revealed that the red scales of this weevil possess a periodic diamond structure, while the network morphology of the blue scales exhibit diamond morphology only on the single scattering unit level with disorder on longer length scales. Full wave simulations performed on the reconstructed volumes indicate that this local order is sufficient to open a partial photonic bandgap even at low dielectric constant contrast between chitin and air in the absence of long-range or translational order. The observation of disordered and ordered photonic crystals within a single organism opens up interesting questions on the cellular origin of coloration and studies on bio-inspired replication of angle-independent colors.
Identifiants
pubmed: 35852001
doi: 10.1002/advs.202202145
pmc: PMC9475527
doi:
Substances chimiques
Diamond
7782-40-3
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e2202145Subventions
Organisme : H2020 European Research Council
ID : PrISMoID (833895)
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
ID : NCCR Bio-inspired Materials
Organisme : Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
ID : 51NF40-182881
Organisme : Adolphe Merkle Foundation
Informations de copyright
© 2022 The Authors. Advanced Science published by Wiley-VCH GmbH.
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