In another case of accidental reverse bio-engineering, humans have again reinvented something already functioning in Nature.
Researchers figured out that light-emitting diode (LED) displays work identically to the iridescent scales of the Swallowtail Butterfly's wings. Both contain directional mirrors that prevent fluorescent light from being trapped, reflecting it upward.
The scales that cover the butterflies’ wings contain tiny structures called “photonic crystals,” which act very much like the microholes found in LEDs. [ READ MORE ]
The butterflies control each iridescent scale like individual pixels displaying colorful moving signals on its wings to a mesmerized audience just like your digital tablet display.
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