School of Physics and OptoElectronics Technology, Fujian Normal University, Fuzhou, People's Republic of China.
Nanotechnology. 2011 Oct 7;22(40):405701. doi: 10.1088/0957-4484/22/40/405701. Epub 2011 Sep 7.
Morphological patterns and structural features play crucial roles in the physical properties of functional materials. In this paper, the mechanical properties of grafold, an architecture of folded graphene nanoribbon, are investigated via molecular dynamics simulations and intriguing features are discovered. In contrast to graphene, grafold is found to develop large deformations upon both tensile and compressive loading along the longitudinal direction. The tensile deformation is plastic, whereas the compressive deformation is elastic and reversible within the strain range investigated. The calculated Young's modulus, tensile strength, and fracture strain are comparable to those of graphene, while the compressive strength and strain are much higher than those of graphene. The length, width, and folding number of grafold have distinctive impacts on the mechanical performance. These unique behaviors render grafold a promising material for advanced mechanical applications.
形态模式和结构特征在功能材料的物理性质中起着至关重要的作用。在本文中，通过分子动力学模拟研究了折叠石墨烯纳米带的结构grolf 的机械性能，发现了有趣的特征。与石墨烯不同，grolf 在沿纵向进行拉伸和压缩加载时都会发生较大的变形。拉伸变形是塑性的，而压缩变形是弹性的，在研究的应变范围内是可逆的。计算得到的杨氏模量、拉伸强度和断裂应变与石墨烯相当，而压缩强度和应变则远高于石墨烯。grolf 的长度、宽度和折叠数对机械性能有显著影响。这些独特的行为使 grolf 成为先进机械应用的有前途的材料。
