中文摘要：

在由 carbyne 链的 graphene 的芳香的碳契约的完全的代替产生其机械性质被期望取决于它的结构的 supergraphene。然而，这依赖是标明日期不清楚的。在这份报纸，为在里面飞机僵硬和 supergraphene 的泊松比率的明确的表情用一个分子的力学模型被获得。supergraphene 的在里面飞机僵硬是的理论结果表演急速地(至少一份订单) 比 graphene 的小，而它的泊松比率比 0.5 高。作为这个指数，数字增加(即， carbyne 的长度锁住增加和债券密度减少) ，当泊松比率增加时， supergraphene 的在里面飞机僵硬减少。由在层模量，在里面飞机僵硬和泊松比率之中分析关系，在在里面飞机僵硬的更快的减少的机制比契约密度由于泊松比率的增加，这被揭示。这些调查结果为在 nanomechanical 系统的 supergraphene 的未来应用是有用的。

英文摘要：

Complete replacement of aromatic carbon bonds in graphene by carbyne chains gives rise to supergraphene whose mechanical properties are expected to depend on its structure. However, this dependence is to date unclear. In this paper, explicit expressions for the in-plane stiffness and Poisson＇s ratio of supergraphene are obtained using a molecular mechanics model. The theoretical results show that the in-plane stiffness of supergraphene is drastically（at least one order） smaller than that of graphene, whereas its Poisson＇s ratio is higher than 0.5. As the index number increases（i.e., the length of carbyne chains increases and the bond density decreases）, the in-plane stiffness of supergraphene decreases while the Poisson＇s ratio increases. By analyzing the relation among the layer modulus, in-plane stiffness and Poisson＇s ratio, it is revealed that the mechanism of the faster decrease in the in-plane stiffness than the bond density is due to the increase of Poisson＇s ratio. These findings are useful for future applications of supergraphene in nanomechanical systems.