Naturwissenschaften

, Volume 97, Issue 12, pp 1067–1076 | Cite as

Solar energy harvesting in the epicuticle of the oriental hornet (Vespa orientalis)

  • Marian Plotkin
  • Idan Hod
  • Arie Zaban
  • Stuart A. Boden
  • Darren M. Bagnall
  • Dmitry Galushko
  • David J. Bergman
Original Paper

Abstract

The Oriental hornet worker correlates its digging activity with solar insolation. Solar radiation passes through the epicuticle, which exhibits a grating-like structure, and continues to pass through layers of the exo-endocuticle until it is absorbed by the pigment melanin in the brown-colored cuticle or xanthopterin in the yellow-colored cuticle. The correlation between digging activity and the ability of the cuticle to absorb part of the solar radiation implies that the Oriental hornet may harvest parts of the solar radiation. In this study, we explore this intriguing possibility by analyzing the biophysical properties of the cuticle. We use rigorous coupled wave analysis simulations to show that the cuticle surfaces are structured to reduced reflectance and act as diffraction gratings to trap light and increase the amount absorbed in the cuticle. A dye-sensitized solar cell (DSSC) was constructed in order to show the ability of xanthopterin to serve as a light-harvesting molecule.

Keywords

Oriental hornet Vespa orientalis Cuticle Dye-sensitized solar cell IV measurements Antireflection Light trapping Diffraction grating 

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Marian Plotkin
    • 1
  • Idan Hod
    • 2
  • Arie Zaban
    • 2
  • Stuart A. Boden
    • 3
  • Darren M. Bagnall
    • 3
  • Dmitry Galushko
    • 4
  • David J. Bergman
    • 5
  1. 1.Department of Physiology and PharmacologySackler Faculty of Medicine Tel-Aviv UniversityRamat AvivIsrael
  2. 2.Institute of Nanotechnology and Advanced Materials, Department of ChemistryBar Ilan UniversityRamat GanIsrael
  3. 3.Nano Research Group, Electronics and Computer ScienceUniversity of SouthamptonSouthamptonUK
  4. 4.Department of PhysicsTechnion-Israel Institute of TechnologyHaifaIsrael
  5. 5.School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact SciencesTel-Aviv UniversityRamat AvivIsrael

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