Antique Nanotubes

All hail the great 17th-century nanotechnologist Assad Ullah!

Actually, he was a swordmaker, one in a long line of smiths who forged the legendary weapons known as Damascus sabers. They were strong yet flexible and supremely sharp, which European warriors first discovered, much to their misfortune, at the hands of Muslims during the Crusades.

The recipe for making Damascus steel was lost at the end of the 18th century, so no one knew the reasons for its remarkable qualities. But an analysis by 21st-century researchers in Germany provides a clue: Damascus sabers, they report in Nature, contain carbon nanotubes.
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