Iridescence and spectral filtering of the gyroid-type photonic crystals in Parides sesostris wing scales
| Autor: | Kristel Michielsen, Hans De Raedt, Doekele G. Stavenga, Bodo D. Wilts |
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| Přispěvatelé: | Zernike Institute for Advanced Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Scale (anatomy)
Materials science POLARIZED IRIDESCENCE STRUCTURAL COLORS BUTTERFLY SCALES Biomedical Engineering Biophysics CALLOPHRYS-RUBI Bioengineering Green-light Biochemistry Optics Parides sesostris COLORATION Photonic crystal biology business.industry iridescence Papilionidae Articles biology.organism_classification Iridescence Photonics business Structural coloration photonic crystal optical filtering Biotechnology Gyroid biomaterials |
| Zdroj: | Interface Focus, 2(5), 681-687. ROYAL SOC |
| ISSN: | 2042-8898 |
| Popis: | The cover scales on the wing of the Emerald-patched Cattleheart butterfly, Parides sesostris , contain gyroid-type biological photonic crystals that brightly reflect green light. A pigment, which absorbs maximally at approximately 395 nm, is immersed predominantly throughout the elaborate upper lamina. This pigment acts as a long-pass filter shaping the reflectance spectrum of the underlying photonic crystals. The additional effect of the filtering is that the spatial distribution of the scale reflectance is approximately angle-independent, leading to a stable wing pattern contrast. The spectral tuning of the original reflectance is verified by photonic band structure modelling. |
| Databáze: | OpenAIRE |
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