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

doi:10.1098/rspb.2016.2334

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

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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.

Original language	English
Article number	20162334
Journal	Proceedings of the Royal Society B: Biological Sciences
Volume	283
Issue number	1845
DOIs	https://doi.org/10.1098/rspb.2016.2334 https://doi.org/10.1098/rspb.2016.2334
Publication status	Published - 28 Dec 2016

Keywords

Beetle scale
Fluorescence
Natural photonic crystal
Photonic bandgap materials
Structural colour

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Mouchet, 2016, Proc R Soc, Submitted

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Mouchet, S. R., Lobet, M., Kolaric, B., Kaczmarek, A. M., van Deun, R., Vukusic, P., Deparis, O., & Van Hooijdonk, E. (2016). Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes. Proceedings of the Royal Society B: Biological Sciences, 283(1845), Article 20162334. https://doi.org/10.1098/rspb.2016.2334, https://doi.org/10.1098/rspb.2016.2334

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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.",

keywords = "Beetle scale, Fluorescence, Natural photonic crystal, Photonic bandgap materials, Structural colour",

author = "Mouchet, {S{\'e}bastien R.} and Micha{\"e}l Lobet and Branko Kolaric and Kaczmarek, {Anna M.} and {van Deun}, Rik and Peter Vukusic and Olivier Deparis and {Van Hooijdonk}, Eloise",

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doi = "10.1098/rspb.2016.2334",

language = "English",

volume = "283",

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Mouchet, SR , Lobet, M, Kolaric, B, Kaczmarek, AM, van Deun, R, Vukusic, P, Deparis, O & Van Hooijdonk, E 2016, 'Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes', Proceedings of the Royal Society B: Biological Sciences, vol. 283, no. 1845, 20162334. https://doi.org/10.1098/rspb.2016.2334, https://doi.org/10.1098/rspb.2016.2334

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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

PY - 2016/12/28

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N2 - 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.

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.

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KW - Fluorescence

KW - Natural photonic crystal

KW - Photonic bandgap materials

KW - Structural colour

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JO - Proceedings of the Royal Society B: Biological Sciences

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

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

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