期刊
ISCIENCE
卷 23, 期 7, 页码 -出版社
CELL PRESS
DOI: 10.1016/j.isci.2020.101339
关键词
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资金
- Swiss National Science Foundation through theNational Center of Competence in Research Bio-inspired Materials [163220, 168223]
- Adolphe Merkle Foundation
- National Science Foundation [NSF DEB 1841704]
- European Union [741855]
- ERC [833895]
- Marie Curie Actions (MSCA) [741855] Funding Source: Marie Curie Actions (MSCA)
- European Research Council (ERC) [833895] Funding Source: European Research Council (ERC)
Light control through layered photonic nanostructures enables the strikingly colored displays of many beetles, birds, and butterflies. To achieve different reflected colors, natural organisms mainly rely on refractive index variations or scaling of a fixed structure design, as opposed to varying the type of structure. Here, we describe the presence of distinct coloration mechanisms in the longhorn beetle Sulawesiella rafaelae, which exhibits turquoise, yellow-green, and orange colors, each with a variable iridescence. By optical and electron microscopy, we show that the colors originate from multilayered architectures in hair-like scales with varying amounts of structural disorder. Structural characterizations and optical modeling show that the disorder strongly influences the optical properties of the scales, allowing an independent adjustment of the optical response. Our results shed light on the interplay of disorder in multilayered photonic structures and their biological significance, and could potentially inspire new ecological research and the development of novel optical components.
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