TNPSC Thervupettagam

World’s oldest nanostructures

December 7 , 2020 1452 days 1056 0
  • Scientists have discovered the oldest known human-made nanomaterials in the “unique black coatings” of ancient pottery shards.
  • These potteries, dated to 600 BC, were unearthed from the archeological site in Keezhadi, Tamil Nadu.
  • The research was published recently in the journal Scientific Reports.
  • It revealed that these coatings are made of carbon nanotubes (CNTs).
  • CNTs are tubes of carbon that are a billionth of a metre in diameter.
  • CNTs are tubular structures of carbon atoms arranged in an ordered manner.
  • They have enabled the layer to last more than 2600 years.
  • CNTs have superlative properties, including high thermal and electrical conductivity, and very high mechanical strength.
  • Before this, the oldest known carbon nanostructures were found in Damascus blades at Syria from the 16th-18th century CE.

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