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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


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.

Original languageEnglish
Pages (from-to)1067-1076
Number of pages10
JournalDie Naturwissenschaften
Issue number12
StatePublished - Dec 2010


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


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