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2016-12-21 - Article/Compte-rendu - Anglais - 7 page(s)

Mouchet S., Lobet M., Kolaric Branko , Kaczmarek A.M., van deun Rik, Vukusic P., Deparis Olivier, Van Hooijdonk E., "Controlled fuorescence in a beetle’s photonic structure and its sensitvity to environmentally induced changes," in Proceedings of the Royal Society. Biological Sciences, 283, 20162334

  • Edition : The Royal Society (United Kingdom)
  • Codes CREF : Matériaux optiques (DI1256), Spectroscopie [électromagnétisme, optique, acoustique] (DI1255)
  • Unités de recherche UMONS : Matériaux Micro et Nanophotoniques (S803)
  • Instituts UMONS : Institut de Recherche en Science et Ingénierie des Matériaux (Matériaux)
Texte intégral :

Abstract(s) :

(Anglais) 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 redshift. 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

Identifiants :
  • DOI : 10.1098/rspb.2016.2334