Oldest known man-made nanostructures found in Tamil Nadu: Scientists
Scientists, including those from VIT, discovered the oldest known man-made nano-materials in the "unique black coatings" of ancient pottery shards in Tamil Nadu. The coatings are made of carbon nanotubes which allowed the layer to last over 2,600 years, researchers said. They added the oldest known nanostructures in human-made artefacts until now were from the eighth or ninth century AD.