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首页> 外文期刊>Physica status solidi, B. Basic research >From flat graphene to bulk carbon nanostructures
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From flat graphene to bulk carbon nanostructures

机译：从平面石墨烯到块状碳纳米结构

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Studies on thin sheets and related materials are of high importance nowadays because of their great potential in various applications. The latest success in the production of graphene opens many new opportunities for the construction of novel three-dimensional carbon nanostructures that exhibit good mechanical and electronic properties together with high specific surface area. Such novel nanostructures based on graphene sheets are very promising for energy storage devices, supercapacitors and stretchable electronics, to name a few. In this work, the mechanical responses of new bulk carbon nanostructures under hydrostatic pressure or shear strain are investigated, respectively, via molecular dynamics simulations. The size effect of the structural units on the strength of crumpled graphene is analyzed. The studied bulk carbon nanostructures are found to be extremely stable against diamondization. It is shown that the structures and mechanical properties of bulk carbon nanomaterials can be altered by severe plastic shear deformation. Shear strain leads to the formation of stable structures, even at relatively small strain. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
机译：由于其在各种应用中的巨大潜力，当今对薄板和相关材料的研究非常重要。石墨烯生产的最新成功为构建新颖的三维碳纳米结构提供了许多新机会，这些三维碳纳米结构具有良好的机械和电子性能以及高比表面积。仅举几例，这种基于石墨烯片的新颖纳米结构对于储能装置，超级电容器和可拉伸电子器件非常有前途。在这项工作中，通过分子动力学模拟分别研究了新的整体碳纳米结构在静水压力或剪切应变下的力学响应。分析了结构单元对皱纹石墨烯强度的尺寸影响。发现所研究的本体碳纳米结构对于金刚石化是极其稳定的。结果表明，大量的碳纳米材料的结构和力学性能可以通过剧烈的塑性剪切变形而改变。即使在相对较小的应变下，剪切应变也会导致形成稳定的结构。 （C）2015 WILEY-VCH Verlag GmbH＆Co.KGaA，Weinheim

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