This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1098/rsif.2011.0730 in citations.
Hemispherical Brillouin zone imaging of a diamond-type biological photonic crystal
Hemispherical Brillouin zone imaging of a diamond-type biological photonic crystal
The brilliant structural body colours of many animals are created by three-dimensional biological photonic crystals that act as wavelength-specific reflectors. Here, we report a study on the vividly coloured scales of the diamond weevil, Entimus imperialis. Electron microscopy identified the chitin...
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Personal Name(s): | Wilts, B.D. |
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Michielsen, K. / De Raedt, H. / Stavenga, D.G. | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Interface, 9 (2012) S. 1609 - 1614 |
Imprint: |
London
The Royal Society
2012
|
Physical Description: |
1609 - 1614 |
DOI: |
10.1098/rsif.2011.0730 |
PubMed ID: |
22188768 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods Scientific Computing |
Series Title: |
Journal of the Royal Society Interface
9 |
Subject (ZB): | |
Publikationsportal JuSER |
The brilliant structural body colours of many animals are created by three-dimensional biological photonic crystals that act as wavelength-specific reflectors. Here, we report a study on the vividly coloured scales of the diamond weevil, Entimus imperialis. Electron microscopy identified the chitin and air assemblies inside the scales as domains of a single-network diamond (Fd3m) photonic crystal. We visualized the topology of the first Brillouin zone (FBZ) by imaging scatterometry, and we reconstructed the complete photonic band structure diagram (PBSD) of the chitinous photonic crystal from reflectance spectra. Comparison with calculated PBSDs indeed showed a perfect overlap. The unique method of non-invasive hemispherical imaging of the FBZ provides key insights for the investigation of photonic crystals in the visible wavelength range. The characterized extremely large biophotonic nanostructures of E. imperialis are structurally optimized for high reflectance and may thus be well suited for use as a template for producing novel photonic devices, e.g. through biomimicry or direct infiltration from dielectric material. |