Share Email Print

Proceedings Paper

Colored reflections from the black-billed magpie feathers
Author(s): Jean Pol Vigneron; Virginie Lousse
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The structural origin of the weak iridescence on some of the dark feathers of the black-billed magpie, Pica pica (Corvidae), is found in the structure of the ribbon-shaped barbules. The cortex of these barbules contains cylindrical holes distributed as the nodes of an hexagonal lattice in the hard layer cross-section. The cortex optical properties are described starting from a photonic-crystal film theory. The yellowish-green coloration of the bird's tail can be explained by the appearance of a reflection band related to the photonic-crystal lowest-lying gap. The bluish reflections from the wings are produced by a more complicated mechanism, involving the presence of a cortex "second gap".

Paper Details

Date Published: 14 August 2006
PDF: 5 pages
Proc. SPIE 6285, The Nature of Light: Light in Nature, 628508 (14 August 2006); doi: 10.1117/12.682243
Show Author Affiliations
Jean Pol Vigneron, Facultés Univ. Notre-Dame de la Paix (Belgium)
Virginie Lousse, Facultés Univ. Notre-Dame de la Paix (Belgium)
Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 6285:
The Nature of Light: Light in Nature
Katherine Creath, Editor(s)

© SPIE. Terms of Use
Back to Top