To create the record-setting cover, scientists invented a tiny "chisel" with a heatable silicon tip 100,000 times smaller than a sharpened pencil point. The resulting magazine cover measures 11 × 14 micrometers, which is so small that 2,000 cover images could fit on a grain of salt.
Just a few grams of the new substance are enough to tag the entire olive oil production of Italy. If counterfeiting were suspected, the particles added at the place of origin could be extracted from the oil and analyzed, enabling a definitive identification of the producer
Cambridge University's Under the Microscope is a collection of videos that capture glimpses of the natural and man-made world in stunning close-up and convey the excitement of cutting-edge science in areas that range from beetle eyes to killer T-cells, from nano-wires to fish skeletons.
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