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

    Research output: Contribution to journalArticlepeer-review

    13 Downloads (Pure)

    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 languageEnglish
    Article number20162334
    JournalRoyal Society of London. Proceedings B. Biological Sciences
    Volume283
    Issue number1845
    DOIs
    Publication statusPublished - 28 Dec 2016

    Keywords

    • Beetle scale
    • Fluorescence
    • Natural photonic crystal
    • Photonic bandgap materials
    • Structural colour

    Fingerprint Dive into the research topics of 'Controlled fluorescence in a beetle’s photonic structure and its sensitivity to environmentally induced changes'. Together they form a unique fingerprint.

    Cite this