Edible holograms could someday decorate foods

Holograms are everywhere, from driver’s licenses to
credit cards to product packaging. And now, edible holograms could
someday enhance foods. Researchers reporting in ACS Nano have
developed a laser-based method to print nanostructured holograms on
dried corn syrup films. The edible holograms could also be used to
ensure food safety, label a product or indicate sugar content, the
researchers say.