Department of Physics, Boston University, Boston, MA 02215, USA.
Department of Mechanical Engineering, Boston University, Boston, MA 02215, USA.
Nanoscale. 2016 Jan 7;8(1):458-63. doi: 10.1039/c5nr06431g.
We report the results of classical molecular dynamics simulations focused on studying the mechanical properties of MoS2 kirigami. Several different kirigami structures were studied based upon two simple non-dimensional parameters, which are related to the density of cuts, as well as the ratio of the overlapping cut length to the nanoribbon length. Our key findings are significant enhancements in tensile yield (by a factor of four) and fracture strains (by a factor of six) as compared to pristine MoS2 nanoribbons. These results, in conjunction with recent results on graphene, suggest that the kirigami approach may be generally useful for enhancing the ductility of two-dimensional nanomaterials.
我们报告了经典分子动力学模拟的结果，重点研究了 MoS2 剪纸的力学性能。我们基于两个简单的无量纲参数研究了几种不同的剪纸结构，这两个参数与切口的密度以及重叠切口长度与纳米带长度的比值有关。与原始的 MoS2 纳米带相比，我们的主要发现是拉伸屈服强度（提高了 4 倍）和断裂应变（提高了 6 倍）显著增强。这些结果与最近关于石墨烯的结果相结合，表明剪纸方法可能普遍有助于提高二维纳米材料的延展性。
