Physicists have uncovered how subtle differences in tiny crystals of butterfly wings create varied patterns of color even among closely related species. Discovery is reported in Optical Society's Optical Materials Express journal in paper titled "Iridescence and nano-structure differences in Papilio butterflies." If researchers can figure out how to replicate wings' light-manipulating properties, discovery could lead to new coatings for manufactured materials that could change color by ...This story is related to the following:Trade Associations