Nanostructures in butterfly wings

A few weeks ago (before it started snowing!) I went on a walk in the garden across the street from the University of Wisconsin chemistry building and saw an abundance of beautiful butterflies. I noticed that the butterflies were iridescent in the sunlight as they fluttered from flower to flower. I wondered: does the iridescence …

Mimicking Nature’s Nanotechnology: From a butterfly wing to anti-counterfeit technologies

Have you ever wondered where the inspiration behind new technologies comes from? We don’t have to go too far to find out; it is enough to just look out the window! Look deep into nature, and then you will understand everything better. -Albert Einstein Yes, nature is out there, standing as a giant laboratory of …