New bid to beat cheats

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UNIVERSITY of Sheffield scientists have developed a new material which could be used as anti-counterfeit devices on passports or banknotes.

The pigment-free intensely coloured polymer materials are said to be difficult to copy because of the complex chemistry behind them – making them ideal for use on passports and cash to avoid criminals trying to clone them.

Dr Andrew Parnell, from The University of Sheffield’s Department of Physics and Astronomy, said: “Our aim was to mimic the wonderful and funky coloured patterns found in nature, such as peacock feathers.

“We now have a painter’s palette of colours that we can choose from, using just two polymers to do this.

“We think these materials have huge potential to be used commercially.”