TY  - JOUR
AU  - Wilts, B.D.
AU  - Michielsen, K.
AU  - De Raedt, H.
AU  - Stavenga, D.G.
TI  - Iridescence and spectral filtering of the gyroid photonic crystals in Parides sesostris wing scales
JO  - Interface Focus
VL  - 2
SN  - 2042-8898
CY  - London
PB  - Royal Society Publishing
M1  - PreJuSER-22534
SP  - 681 - 687
PY  - 2012
N1  - We thank H. L. Leertouwer and A. J. M. Vey for cooperation, three anonymous reviewers for constructive comments and the Materials Science Group (Prof. J. Th. De Hosson, University of Groningen) for providing SEM facilities. This study was financially supported by AFOSR/EOARD (grant FA8655-08-1-3012) and partially supported by NCF, The Netherlands.
AB  - The cover scales on the wing of the Emerald-patched Cattleheart butterfly, Parides sesostris, contain gyroid-type biological photonic crystals that brightly reflect green light. A pigment, which absorbs maximally at approximately 395 nm, is immersed predominantly throughout the elaborate upper lamina. This pigment acts as a long-pass filter shaping the reflectance spectrum of the underlying photonic crystals. The additional effect of the filtering is that the spatial distribution of the scale reflectance is approximately angle-independent, leading to a stable wing pattern contrast. The spectral tuning of the original reflectance is verified by photonic band structure modelling.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000308239700018
C6  - pmid:24098853
DO  - DOI:10.1098/rsfs.2011.0082
UR  - https://juser.fz-juelich.de/record/22534
ER  -