Structural color

Structural coloration is a coloring that results from the special structure of the surface. Sometimes structural coloration is combined with pigments: for exam…

Structural color
The brilliant iridescent colours of the male Peacock's tail feathers are created by structural coloration, as first noted by Isaac Newton and Robert Hooke.

Structural coloration is a coloring that results from the special structure of the surface. Sometimes structural coloration is combined with pigments: for example, peacock tail feathers are pigmented brown, but their structure makes them appear blue, turquoise, and green, and often they appear iridescent.[1][2]

English scientists Robert Hooke and Isaac Newton were the first who observed structural coloration. Thomas Young described its principle a century later and called it wave interference. Young described iridescence as the result of interference between reflections from several surfaces of thin films, combined with refraction as light enters and leaves such films. The geometry then determines that at certain angles, the light reflected from both surfaces adds (interferes constructively), while at other angles, the light subtracts. As a result, different colors appear at different angles.

References

  1. ↑ Hooke, Robert. Micrographia. Chapter 36 ('Observ. XXXVI. Of Peacoks, Ducks, and Other Feathers of Changeable Colours.')
  2. ↑ Ball, Philip (May 2012). "Nature's Color Tricks". Scientific American. 306 (5): 74–79. Bibcode:2012SciAm.306e..74B. doi:10.1038/scientificamerican0512-74 (inactive 6 August 2026). PMID 22550931.{{cite journal}}: CS1 maint: DOI inactive as of August 2026 (link)

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