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ResearchZernike (ZIAM)THREKDe Raedt Group


Fig. 1
Fig. 1

The cuticular microstructure in the wing scales of various butterfly (Papilionidae and Lycaenidae) and weevil species can be modelled by a gyroid and diamond structure, respectively.

Optical measurements

  • The structure of the wing scales is investigated by scanning electron microscopy (SEM) and by transmission electron microscopy (TEM).
  • The far-field angular distribution of the light scattered from single domains on single scales is visualized with an imaging scatterometer.
  • Transmittance and reflectance spectra from single scales are measured with a microspectrophotometer.

Computer simulations

  • The cubic air–cuticle structures of the scales are modelled by structures based on the level surfaces.
  • Light scattering from the cubic air-cuticle structures is calculated by means of TDME3D, a massively parallel three-dimensional finite-difference finite-domain (FDTD) Maxwell solver. One calculation (one wavelength, one angle of incidence and one type of polarization) requires a memory of approximately 260 GB (approx. equal to 1.5 X 109 lattice points).
  • Photonic band structure diagrams for the cubic-air structures are calculated with the MIT photonics bandgap package

Selected publications:

  • B.D. Wilts, K. Michielsen, H. De Raedt, and D.G. Stavenga,
    "Iridescence and spectral filtering of the gyroid photonic crystals in Parides sesostris wing scales",
    Interface Focus 2, 681 – 687 (2012)
  • B. Wilts, K. Michielsen, H. De Raedt, and D. Stavenga,
    "Fotonische kristallen in kevers en vlinders",
    Nederlands Tijdschrift voor Natuurkunde 78, 264 - 267 (2012)
  • B.D. Wilts, K. Michielsen, H. De Raedt, and D.G. Stavenga,
    "Hemispherical Brillouin zone imaging of a diamond-type bio-photonic crystal",
    J. R. Soc. Interface 9, 1609 - 1614 (2012)
  • B.D. Wilts, K. Michielsen, J. Kuipers, H. De Raedt, and D.G. Stavenga,
    "Brilliant camouflage: Photonic crystals in the Diamond Weevil,Entimus imperialis",
    Proc. R. Soc. B 279, 2524 – 2530 (2012)
  • K. Michielsen, H. De Raedt, and D. Stavenga
    "Reflectivity of the gyroid biophotonic crystals in the ventral wing scales of the Green Hairstreak butterfly, Callophrys rubi",
    J. R. Soc. Lond. Interface 7, 765 - 771 (2010)
  • K.F.L. Michielsen and J.S. Kole,
    "Photonic band gaps in materials with triply periodic surfaces and related tubular structures",
    Phys. Rev. B 68, 115107 (2003)
Last modified:06 March 2019 1.31 p.m.