Structurally assisted blackness in butterfly scales
نویسندگان
چکیده
منابع مشابه
Structurally assisted blackness in butterfly scales.
Surfaces of low reflectance are ubiquitous in animate systems. They form essential components of the visual appearance of most living species and can explicitly influence other biological functions such as thermoregulation. The blackness associated with all opaque surfaces of low reflectivity has until now been attributed to strongly absorbing pigmentation alone. Our present study challenges th...
متن کاملImaging scatterometry of butterfly wing scales.
We describe an imaging scatterometer allowing hemispherical reflectance measurements as a function of the angle of incidence. The heart of the scatterometer is an ellipsoidal reflector, which compresses the hemispherical reflection into a cone-shaped beam that can be imaged by a normal optical system. The instrument's performance is illustrated by measurements of the scattering profiles of the ...
متن کاملPhotonic Nanoarchitectures in Butterfly Scales Allowing Species Identification
We investigated photonic crystal colored blue butterfly wings with the use of optical spectroscopy. The extracted data from the optical spectra were analyzed by artificial neural network software. Over 100 exemplars of nine related Polyommatus species could be classified with 96% accuracy using only the spectral data measured in a nondestructive way. © Selection and peer-review under responsibi...
متن کاملGyroid cuticular structures in butterfly wing scales: biological photonic crystals
We present a systematic study of the cuticular structure in the butterfly wing scales of some papilionids (Parides sesostris and Teinopalpus imperialis) and lycaenids (Callophrys rubi, Cyanophrys remus, Mitoura gryneus and Callophrys dumetorum). Using published scanning and transmission electron microscopy (TEM) images, analytical modelling and computer-generated TEM micrographs, we find that t...
متن کاملIridescence from photonic crystals and its suppression in butterfly scales.
Regular three-dimensional periodic structures have been observed in the scales of over half a dozen butterfly species. We compare several of these structures: we calculate their photonic bandgap properties; measure the angular variation of the reflection spectra; and relate the observed iridescence (or its suppression) to the structures. We compare the mechanisms for iridescence suppression in ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Royal Society of London. Series B: Biological Sciences
سال: 2004
ISSN: 0962-8452,1471-2954
DOI: 10.1098/rsbl.2003.0150