The scales covering the elytra of the male <i>Hoplia coerulea</i> 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.
|Date made available||1 Jan 2016|
Kaczmarek, A. M. (Contributor), Kolaric, B. (Contributor), Van Hooijdonk, E. (Contributor), Lobet, M. (Contributor), Deparis, O. (Contributor), Vukusic, P. (Contributor), Van Deun, R. (Contributor), Mouchet, S. (Contributor) (1 Jan 2016). Supplementary material from "Controlled fluorescence in a beetle's photonic structure and its sensitivity to environmentally induced changes". Figshare. 10.6084/m9.figshare.c.3593741.v2