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Carbon nanothread : ウィキペディア英語版
Carbon nanothread
A diamond nanothread is a tetrahedrally-bonded carbon crystalline nanomaterial (a close-packed ''sp''3 bonded carbon structure). Its structure is similar to that diamond. DNTs are only a few atoms across, more than 20,000 times thinner than a human hair.
== Properties ==
DNTs rival or exceed the strength of carbon nanotubes (CNTs), which are 500 times stronger than steel. Recent molecular dynamics simulations have indicated a stiffness on the order of carbon nanotubes (approx. 850 GPa) and a specific strength of approx. 4 × 107 N·m/kg.〔Roman, R. Kwan, K., and Cranford, S.W., (Mechanical Properties and Defect Sensitivity of Diamond Nanothreads ), Nano Letters, Feb. 18, 2015, 15 (3), pp 1585–1590〕
Every type of DNT has a very high Young's modulus (the amount of force needed to stretch or compress a substance). The value for the strongest type of DNT is around 900 gigapascal (1 GPa is about 10,000 atmospheres) compared to steel at 200 GPa and diamond at over 1,200 GPa.

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