IDEA #2SAAMX Diamene: pressure-activated ultra-hard carbon phase from two-layer graphene. 18A0001

Diamene is a new phase of carbon that is induced during uniaxial compression of a 2-L (double-layer) graphene film on Silicon Carbide (SiC). The phase transition occurs at room temperature and leads to the formation of a diamond-like phase with mechanical properties that are comparable to or better than those of diamond. Diamene is an ultrastiff (elastic modulus ~ 1 TPa), ultrathin (1-2 atomic layers), optically transparent, and chemically stable (under compression) coating that is formed during compression of 2-L graphene on the surface of SiC, increasing enormously the surface stiffness of this material at the nanoscale.
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