Amazing stuff!
"Applying high temperatures and pressure to buckminsterfullerene C60 produces amorphous carbon materials with a compressive strength similar to diamond, scientists have found. ...
The hardest among these amorphous materials made by an international team of researchers was created at 1200˚C. Its tetragonally-arranged network of sp3 carbons is so hard it scratches diamond and is of a similar compressive strength, which describes the material’s ability to withstand being squashed under a load. But unlike insulating diamond, the material has a small bandgap, making it a semiconductor. This could be useful in solar cells and photoelectric applications as the bandgap is similar to silicon."
The hardest among these amorphous materials made by an international team of researchers was created at 1200˚C. Its tetragonally-arranged network of sp3 carbons is so hard it scratches diamond and is of a similar compressive strength, which describes the material’s ability to withstand being squashed under a load. But unlike insulating diamond, the material has a small bandgap, making it a semiconductor. This could be useful in solar cells and photoelectric applications as the bandgap is similar to silicon."
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