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Comparative study on nanostructured order–disorder in the wing eyespots of the giant owl butterfly, Caligo memnon
Comparative study on nanostructured order–disorder in the wing eyespots of the giant owl butterfly, Caligo memnon
- Source :
- IET Nanobiotechnology, IET Nanobiotechnology, Institution of Engineering and Technology (IET), 2018, 12 (7), pp.951-955. ⟨10.1049/iet-nbt.2017.0320⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- A characteristic feature of the giant owl butterfly, i.e. Caligo memnon , is its big wing eyespot. This feature could serve as deceiving functionality for the butterfly against predators. As evidenced by scanning electron microscope (SEM) image on black part of eyespot, the scales on wing eyespot contain nanostructured ridges and cross-ribs. Applying direct measurement, statistical method, and Fourier analysis, the authors evidence that these nanostructures display order–disorder in their shape and position. The autocorrelation of SEM image provides average values of characteristic periods of the order–disorder nanostructures together with an estimation of corresponding correlation lengths. Linecuts obtained from the Fourier transform of SEM image were also analysed with the Hosemann function to extract similar information. These analyses indicate that the nanostructured order–disorder may contribute to blackness on wing eyespot. The authors thus conclude that the blackness on wing eyespot of C. memnon could be attributed to contributions from both the nanostructured order–disorder and melanin pigment.
- Subjects :
- Materials science
02 engineering and technology
010402 general chemistry
01 natural sciences
Owl butterfly
symbols.namesake
Optics
Electrical and Electronic Engineering
ComputingMilieux_MISCELLANEOUS
[PHYS]Physics [physics]
Caligo memnon
Wing
biology
business.industry
021001 nanoscience & nanotechnology
biology.organism_classification
0104 chemical sciences
Electronic, Optical and Magnetic Materials
Order (biology)
Fourier transform
symbols
Eyespot
0210 nano-technology
Melanin pigment
business
Biotechnology
Subjects
Details
- Language :
- English
- ISSN :
- 17518741 and 1751875X
- Database :
- OpenAIRE
- Journal :
- IET Nanobiotechnology, IET Nanobiotechnology, Institution of Engineering and Technology (IET), 2018, 12 (7), pp.951-955. ⟨10.1049/iet-nbt.2017.0320⟩
- Accession number :
- edsair.doi.dedup.....4e33db896d745156c6988fb97e953ddb
- Full Text :
- https://doi.org/10.1049/iet-nbt.2017.0320⟩