Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes

Sébastien R. Mouchet, Michaël Lobet, Branko Kolaric, Anna M. Kaczmarek, Rik van Deun, Peter Vukusic, Olivier Deparis, Eloise Van Hooijdonk

Résultats de recherche: Contribution à un journal/une revueArticle

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Résumé

The scales covering the elytra of the male Hoplia coerulea beetle contain fluorophores embedded within a porous photonic structure. The photonic structure controls both insect colour (reflected light) and fluorescence emission. Herein, the effects of water-induced changes on the fluorescence emission from the beetle were investigated. The fluorescence emission peak wavelength was observed to blue-shift on water immersion of the elytra whereas its reflectance peak wavelength was observed to red-shift. Time-resolved fluorescence measurements, together with optical simulations, confirmed that the radiative emission is controlled by a naturally engineered photonic bandgap while the elytra are in the dry state, whereas non-radiative relaxation pathways dominate the emission response of wet elytra.

langue originaleAnglais
Numéro d'article20162334
journalRoyal Society of London. Proceedings B. Biological Sciences
Volume283
Numéro de publication1845
Les DOIs
étatPublié - 28 déc. 2016

Empreinte digitale

Optics and Photonics
Beetles
Photonics
beetle
fluorescence
Fluorescence
Coleoptera
Insect control
wavelengths
Insect Control
Wavelength
Fluorophores
Water
wavelength
Immersion
insect control
fluorescent dyes
Energy gap
Color
reflectance

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abstract = "The scales covering the elytra of the male Hoplia coerulea beetle contain fluorophores embedded within a porous photonic structure. The photonic structure controls both insect colour (reflected light) and fluorescence emission. Herein, the effects of water-induced changes on the fluorescence emission from the beetle were investigated. The fluorescence emission peak wavelength was observed to blue-shift on water immersion of the elytra whereas its reflectance peak wavelength was observed to red-shift. Time-resolved fluorescence measurements, together with optical simulations, confirmed that the radiative emission is controlled by a naturally engineered photonic bandgap while the elytra are in the dry state, whereas non-radiative relaxation pathways dominate the emission response of wet elytra.",
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Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes. / Mouchet, Sébastien R.; Lobet, Michaël; Kolaric, Branko; Kaczmarek, Anna M.; van Deun, Rik; Vukusic, Peter; Deparis, Olivier; Van Hooijdonk, Eloise.

Dans: Royal Society of London. Proceedings B. Biological Sciences, Vol 283, Numéro 1845, 20162334, 28.12.2016.

Résultats de recherche: Contribution à un journal/une revueArticle

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T1 - Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes

AU - Mouchet, Sébastien R.

AU - Lobet, Michaël

AU - Kolaric, Branko

AU - Kaczmarek, Anna M.

AU - van Deun, Rik

AU - Vukusic, Peter

AU - Deparis, Olivier

AU - Van Hooijdonk, Eloise

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AB - The scales covering the elytra of the male Hoplia coerulea beetle contain fluorophores embedded within a porous photonic structure. The photonic structure controls both insect colour (reflected light) and fluorescence emission. Herein, the effects of water-induced changes on the fluorescence emission from the beetle were investigated. The fluorescence emission peak wavelength was observed to blue-shift on water immersion of the elytra whereas its reflectance peak wavelength was observed to red-shift. Time-resolved fluorescence measurements, together with optical simulations, confirmed that the radiative emission is controlled by a naturally engineered photonic bandgap while the elytra are in the dry state, whereas non-radiative relaxation pathways dominate the emission response of wet elytra.

KW - Beetle scale

KW - Fluorescence

KW - Natural photonic crystal

KW - Photonic bandgap materials

KW - Structural colour

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