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The science behind the vibrant colours of butterflies could inspire a new generation of safer and more durable paints and glitters. Researchers from Northeastern University (NU), which has its headquarters in Boston, US, are taking a cue from nature in the search for coatings without harmful, chemical-based pigments.
They are investigating a phenomenon called ‘structural colour’, in which microscopic structures interact with light to create the kind of shimmering displays seen on butterflies’ wings and peacocks’ feathers.
Most of the familiar colours we see are the result of pigmentation. Carrots, for example, get their hue from carotenoids, which reflect orange light while absorbing other wavelengths.
