An international team led by Artem R. Oganov, PhD, a professor of theoretical crystallography in the Department of Geosciences at Stony Brook University, has established the structure of a new form of carbon.
The results of their work, “Understanding the Nature of Superhard Graphite,” were published June 26 in Scientific Reports, a new journal of the Nature Publishing Group.
Dr. Oganov and his team used a novel computational method to demonstrate that the properties of what had previously been thought to be only a hypothetical structure of a superhard form of carbon called “M-carbon” — constructed by Oganov in 2006 — matched perfectly the experimental data on “superhard graphite.”
“Most of the known forms of carbon have a colorful story of their discovery and a multitude of real or potential revolutionary applications,” said Oganov. “Think of diamond, a record-breaking material in more than one way. Think of graphene, destined to become the material of electronics of the future. Or of fullerenes, the discovery of which has started the field of nanoscience.”
The story of yet another form of carbon started in 1963, when Aust and Drickamer compressed graphite at room temperature. High-temperature compression of graphite is known to produce diamond, but at room temperature an unknown form of carbon was produced. This new form, like diamond, was transparent and superhard — but its other properties were inconsistent with diamond or other known forms of carbon.
Ready the whole story here Structure of new superhard form of carbon established.