Bank note nanotechnology based on butterfly wings could beat forgers

Banknotes could become as beautiful as butterfly wings one day using technology borrowed from nature. British scientists have found a way to mimic the iridescent colors of tropical butterflies, created by light bouncing off microscopic wing structures. The research could be used to make banknotes and credit cards that are visually striking and harder to forge. “These artificial structures could be used to encrypt information in optical signatures on banknotes to protect them against forgery." said Mathias Kolle, a PhD student at the University of Cambridge.   Read More

[Source: timesonline.co.uk]