Additive Photonic Colors in the Brazilian Diamond Weevil, Entimus imperialis

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Résumé

Structurally colored nano-architectures found in living organisms are complex optical materials, giving rise to multi-scale visual effects. In arthropods, these structures often consist of porous biopolymers and form natural photonic crystals. A signature of the structural origin of coloration in insects is iridescence, i.e., color changes with the viewing angle. In the scales located on the elytra of the Brazilian weevil Entimus imperialis (Curculionidae), three-dimensional photonic crystals are observed. On one hand, each of them interacts independently with light, producing a single color which is observed by optical microscopy and ranges from blue to orange. On the other hand, the color perceived by the naked eye is due to multi-length-scale light effects involving different orientations of a single photonic crystal. This disorder in crystal orientations alters the light propagation in such a way that the crystal iridescence is removed. Entimus imperialis is therefore a remarkable example of additive photonic colors produced by a complex multi-scale organic architecture. In order to study this specific natural photonic structure, electron microscopy is used. The structure turns out to be formed of a single type of photonic crystal with different orientations within each scale on the elytra. Our modeling approach takes into account the disorder in the photonic crystals and explains why the structure displays bright colors at the level of individual scales and a non-iridescent green color in the far-field.
langue originaleAnglais
Numéro d'article848003
Pages (de - à)1-15
Nombre de pages15
journalProc. of SPIE
Volume8480
Numéro de publication84803
Les DOIs
étatPublié - 12 août 2012
EvénementSPIE Conference - Optics+Photonics - San Diego, États-Unis
Durée: 11 août 2012 → …

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Diamond
Strombus or kite or diamond
Photonics
Photonic crystals
Diamonds
Photonic Crystal
diamonds
photonics
Color
color
Crystal orientation
crystals
iridescence
Disorder
Crystal
arthropods
Biopolymers
Optical Materials
disorders
Light propagation

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title = "Additive Photonic Colors in the Brazilian Diamond Weevil, Entimus imperialis",
abstract = "Structurally colored nano-architectures found in living organisms are complex optical materials, giving rise to multi-scale visual effects. In arthropods, these structures often consist of porous biopolymers and form natural photonic crystals. A signature of the structural origin of coloration in insects is iridescence, i.e., color changes with the viewing angle. In the scales located on the elytra of the Brazilian weevil Entimus imperialis (Curculionidae), three-dimensional photonic crystals are observed. On one hand, each of them interacts independently with light, producing a single color which is observed by optical microscopy and ranges from blue to orange. On the other hand, the color perceived by the naked eye is due to multi-length-scale light effects involving different orientations of a single photonic crystal. This disorder in crystal orientations alters the light propagation in such a way that the crystal iridescence is removed. Entimus imperialis is therefore a remarkable example of additive photonic colors produced by a complex multi-scale organic architecture. In order to study this specific natural photonic structure, electron microscopy is used. The structure turns out to be formed of a single type of photonic crystal with different orientations within each scale on the elytra. Our modeling approach takes into account the disorder in the photonic crystals and explains why the structure displays bright colors at the level of individual scales and a non-iridescent green color in the far-field.",
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Additive Photonic Colors in the Brazilian Diamond Weevil, Entimus imperialis. / Mouchet, Sébastien; Vigneron, Jean-Pol; Colomer, Jean-François; Vandenbem, Cedric; Deparis, Olivier.

Dans: Proc. of SPIE, Vol 8480, Numéro 84803, 848003, 12.08.2012, p. 1-15.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Additive Photonic Colors in the Brazilian Diamond Weevil, Entimus imperialis

AU - Mouchet, Sébastien

AU - Vigneron, Jean-Pol

AU - Colomer, Jean-François

AU - Vandenbem, Cedric

AU - Deparis, Olivier

N1 - M1 - Article

PY - 2012/8/12

Y1 - 2012/8/12

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KW - photonic bandgap materials

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KW - iridescence

KW - Coleoptera

KW - nanoarchitecture

KW - bioinspiration

KW - biomimetics

KW - biomaterials

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JO - Proceedings of SPIE

JF - Proceedings of SPIE

SN - 0277-786X

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