A Study on Tamil Nadu Newsprint and - are
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| Primark | 1 day ago · Rajavelu S, Professor of History at Alagappa University in Tamil Nadu, who was unrelated to the study, told news agency PTI that the people of this time may have added or coated something similar. 1 day ago · TAMIL NADU NEWSPRINT & PAPERS LTD. - Compliances-Reg. 39 (3) - Details of Loss of Certificate / Duplicate Certificate. 5 days ago · Tamil Nadu Schools, colleges not to reopen in Tamil Nadu on November 16 Tamil Nadu Daily COVID count stays under 2, in Tamil Nadu Tamil Nadu Location: Kasturi Building, Anna Salai, , Mount Road, Chennai, , Tamil Nadu. |
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Scientists have discovered the oldest known human-made nano-materials in ancient artifacts in Tamil Nadu.
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Scientists have discovered the oldest known human-made nano-materials in the "unique black coatings" of ancient pottery shards - dated A Study on Tamil Nadu Newsprint and BC - unearthed from an archeological site in Keeladi, Tamil Nadu. The research, published recently in the journal Scientific Reports, revealed that these coatings are made of carbon nanotubes CNTs which have enabled the layer learn more here last more than years, raising questions on the tools used during those Nau to achieve high temperatures for making earthenwares. According to the scientists, including those from Vellore Institute of Technology VIT in Tamil Nadu, the coatings are "the oldest nano-structures observed till now. Carbon Nanotubes are tubular structures of carbon atoms arranged in an ordered manner, Mr Chandrasekaran said, adding that coatings in ancient artifacts may not usually last this long due to wear and tear caused by changing conditions.
Carbon nanotubes have superlative properties, including high thermal and electrical conductivity, and very Nessprint mechanical strength, explained nano-material scientist MM Shaijumon from IISER Thiruvananthapuram, who was unrelated to the study.
According to Mr Chandrasekaran, the closest scientific explanation for the finding is that some "vegetal fluid or extract" might have been used in the coatings of these pots which may have led to the formation of CNTs during high-temperature processing. Rajavelu S, Professor of History at Alagappa University in Tamil Nadu, who was unrelated to the study, told Newspront agency PTI that the people of this time may have added or coated something similar to plant-sap to the inside of the pots, and subject it to the nearly degree Celsius high-temperature fire treatment as seen in kilns. So these structures are already even present in nature continue reading only now we are observing them," explained Mr Shaijumon.
He said the ancient people would not have known these as CNTs, but may have just had the need to make their pots have high durability, "and may have needed a certain colour out of their products on applying high-temperature firing. Commenting on the significance of the research, Sharada Srinivasan, an expert in archaemetallurgy associated with the National Institute of Advanced Studies NIAS in Bengaluru, A Study on Tamil Nadu Newsprint and nanotechnology has made strides since the 90s with the advent of advanced techniques like the scanning tunnelling microscopy. Based on their analysis, Newsptint Chandrasekaran said the ancient Tamil civilization of this time were aware of, and mastered high-temperature processing, but added that the means and mechanism by which they produced these artifacts with carbon-nanotubes is not widely explored.
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The fine black and red effect was achieved by high temperature firing temperatures at about degrees in the presence of carbon-rich matter qnd iron-rich red soils," Ms Srinivasan said. He said these earthenwares were likely used by the "sophisticated people of the time," adding that "a lot of the shards" have been found in Keeladi, "some dating back even as early as BCE. Even the Sangam ancient Tamil literature has noted about steel manufacture," Mr Rajavelu said.
Promoted Listen to the latest songsonly on JioSaavn. She believes the findings expand the broader knowledge of the history of science and technology in India, and point to potential future applications of such nano-materials as durable coatings. Except for the headline, this story has not been edited by NDTV staff and is click from a syndicated feed.
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