Correlated diffraction and fluorescence in the backscattering iridescence of the male butterfly Troides magellanus (Papilionidae)

Jean Pol Vigneron, K. Kertész, Z. Vértesy, Marie Rassart, Virginie Lousse, Z. Bálint, L. Bíró

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The male Troides magellanus-a birdwing butterfly that lives in a restricted area of the Philippines-concentrates on its hindwings at least two distinct optical processes that contribute to its exceptional visual attraction. The first is the very bright uniform yellow coloration caused by a pigment which generates yellow-green fluorescence, and the other is a blue-green iridescence which results from light diffraction at grazing emergence under a specific illumination. Detailed optical measurements reveal that these optical effects are correlated, the fluorescence being enhanced by illuminations conditions that favor the occurrence of the iridescence. These effects are analyzed, with the conclusion that both of them depend on the same optical device: a one-dimensional microribs grating which appear on the sides of the ridges that run along the yellow scales.

Original languageEnglish
Article number021903
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume78
Issue number2
DOIs
Publication statusPublished - Aug 8 2008

Fingerprint

iridescence
Backscattering
Fluorescence
Diffraction
Illumination
backscattering
illumination
fluorescence
Philippines
Optical Measurement
Optical Devices
grazing
Ridge
pigments
diffraction
optical measurement
Gratings
attraction
ridges
gratings

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Mathematical Physics

Cite this

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AU - Vigneron, Jean Pol

AU - Kertész, K.

AU - Vértesy, Z.

AU - Rassart, Marie

AU - Lousse, Virginie

AU - Bálint, Z.

AU - Bíró, L.

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