Foam as a self-assembling amorphous photonic band gap material.
disordered photonic materials
hyperuniformity
metamaterials
photonic band gap
self-assembly
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
07 May 2019
07 May 2019
Historique:
pubmed:
26
4
2019
medline:
26
4
2019
entrez:
26
4
2019
Statut:
ppublish
Résumé
We show that slightly polydisperse disordered 2D foams can be used as a self-assembled template for isotropic photonic band gap (PBG) materials for transverse electric (TE) polarization. Calculations based on in-house experimental and simulated foam structures demonstrate that, at sufficient refractive index contrast, a dry foam organization with threefold nodes and long slender Plateau borders is especially advantageous to open a large PBG. A transition from dry to wet foam structure rapidly closes the PBG mainly by formation of bigger fourfold nodes, filling the PBG with defect modes. By tuning the foam area fraction, we find an optimal quantity of dielectric material, which maximizes the PBG in experimental systems. The obtained results have a potential to be extended to 3D foams to produce a next generation of self-assembled disordered PBG materials, enabling fabrication of cheap and scalable photonic devices.
Identifiants
pubmed: 31019086
pii: 1820526116
doi: 10.1073/pnas.1820526116
pmc: PMC6511009
doi:
Types de publication
Journal Article
Langues
eng
Pagination
9202-9207Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
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