Aggregated diamond nanorods



Aggregated diamond nanorods, or ADNRs, are an ultrahard fullerite.

A process to produce the substance was discovered by physicists in Germany, led by Natalia Dubrovinskaia, at the University of Bayreuth in 2005. ADNRs are made by compressing allotropic carbon kelvin, using a unique 5000-metric-ton multi anvil press. The resulting substance is a series of interconnected diamond nanorods, with diameters of between 5 and 20 nanometres and lengths of around 1 micrometre each.  

A European Synchrotron Radiation Facility at Grenoble, France, was used to measure the compressibility of the material.

Hardness

Carbon nanotubes have a hardness greater than 10 in the Mohs' hardness scale. Its absolute hardness is greater than 1500.

See also

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Tricarbon - Atomic carbon
 
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