In general, a carbon material is a graphene hexagonal structure. Recently, Applied Physics, Peking University Professor Wang Qian Research Group and the Technical Research Centre and other international partners to simulate the synthesis of a novel called pentagon graphene carbon materials. And the six-membered rings of carbon graphene posed different, this new carbon allotrope is a two-dimensional structure motif ring structure consisting of pure EPA yuan, and has excellent properties comparable with graphene. The results of a recent study published in the "American Academy of Sciences" on.
Carbon material has been considered the leading edge materials science. Carbon material and the carbon nanostructure previously found mostly in the six-membered carbon ring as a main structure of the base element is constituted, except for the smallest C20 fullerene molecules, carbon material only EPA-membered ring is constituted by elementary structures has not been found. Wang former team found only EPA-membered ring may be composed of two-dimensional carbon structure, breaking the carbon material in the "isolated pentagon rule" and by molecular dynamics simulations demonstrated graphene pentagon is thermally stable, can withstand temperatures up to 1000K.
Pentagon graphene having a novel structure, which is similar to projection called "Cairo pentagonal tiles" decorative patterns. The researchers suggest that the pentagon graphene using chemical peeling technique can be called from a carbon allotrope get T12 phase.
Wang former team through in-depth study found that graphene has a rare pentagon negative Poisson's ratio effect, that is, when subjected to tensile strain in one direction, the vertical direction with the expansion effect, which is a contraction effect common materials are different; When subjected to biaxial tensile strain in which ultra-high mechanical strength comparable with graphene. So pentagon graphene with special physical and mechanical properties, such as better than graphene fracture resistance and resilience and toughness, and resistance to load capacity, can be used insulation materials and cushioning materials. Before the king believes that this study has greatly enriched the people's understanding of carbon structure. Pentagon graphene can be applied to lightweight semiconductor thin film devices, strain amplifiers. Once synthesized, is expected to find wide use in a nanoscale electronic and mechanical devices.
Carbon material has been considered the leading edge materials science. Carbon material and the carbon nanostructure previously found mostly in the six-membered carbon ring as a main structure of the base element is constituted, except for the smallest C20 fullerene molecules, carbon material only EPA-membered ring is constituted by elementary structures has not been found. Wang former team found only EPA-membered ring may be composed of two-dimensional carbon structure, breaking the carbon material in the "isolated pentagon rule" and by molecular dynamics simulations demonstrated graphene pentagon is thermally stable, can withstand temperatures up to 1000K.
Pentagon graphene having a novel structure, which is similar to projection called "Cairo pentagonal tiles" decorative patterns. The researchers suggest that the pentagon graphene using chemical peeling technique can be called from a carbon allotrope get T12 phase.
Wang former team through in-depth study found that graphene has a rare pentagon negative Poisson's ratio effect, that is, when subjected to tensile strain in one direction, the vertical direction with the expansion effect, which is a contraction effect common materials are different; When subjected to biaxial tensile strain in which ultra-high mechanical strength comparable with graphene. So pentagon graphene with special physical and mechanical properties, such as better than graphene fracture resistance and resilience and toughness, and resistance to load capacity, can be used insulation materials and cushioning materials. Before the king believes that this study has greatly enriched the people's understanding of carbon structure. Pentagon graphene can be applied to lightweight semiconductor thin film devices, strain amplifiers. Once synthesized, is expected to find wide use in a nanoscale electronic and mechanical devices.