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Butterfly Wings Are Templates for Photonic
Structures
  
  This scanning electron microscope image shows the structure on
the surface of a butterfly wing scale. Image courtesy of Zhong
Lin Wang

Using a low-temperature atomic layer deposition (ALD) process, materials scientists at the GeorgiaInstitute of Technology produced aluminum oxide (alumina) replicas of wing scales from a Morphopeleides butterfly, a bright blue insect native to the rain forests of Central and South America. The artificialwing scales faithfully replicated the physical features and optical properties of the natural wing scales thatserved as templates.

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