New Form of Carbon is Stronger Than Graphene and Diamond | MIT Technology Review: It is a chain of carbon atoms that are linked either by alternate triple and single bonds or by consecutive double bonds...
These guys have calculated from first principles the bulk properties of carbyne and the results make for interesting reading...
Carbon nanotubes and graphene, for example, have a stiffness of 4.5 x 10^8 N.m/kg but carbyne tops them with a stiffness of around 10^9 N.m/kg...
Liu and co calculate that it takes around 10 nanoNewtons to break a single strand of carbyne...
...when twisted, it can either rotate freely or become torsionally stiff depending on the chemical group attached to its end...
“This barrier suggests the viability of carbyne in condensed phase at room temperature on the order of days,” they conclude.
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