Abstract Graphene has great potential to be used in flexible electronics owing to its novel physical and electronic properties, and super-high mechanical strength. However, its small mechanical strain is unable to meet the needs for most flexible and stretchable device applications where large deformation occurs. Kirigami is one of the useful techniques to increase the flexibility of graphene under deformation. In this study, we investigate the shear flexibility of kirigami graphene under shear loading by using molecular dynamics simulations. We found that kirigami is very efficient in modulating the shear properties of graphene. With the trade-off between strength and flexibility, the shear flexibility of kirigami graphene can be improved significantly. The flexibility can be further improved by using longer interior cuts. Our results indicate that kirigami can be a promising technique to manipulate the shear properties of graphene and other two-dimensional nanomaterials.

中文翻译：

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剪纸石墨烯在剪切载荷下的力学行为

摘要 石墨烯具有新颖的物理和电子特性，以及超高的机械强度，在柔性电子领域具有巨大的应用潜力。然而，其较小的机械应变无法满足大多数发生大变形的柔性和可拉伸设备应用的需求。剪纸是在变形下增加石墨烯柔韧性的有用技术之一。在这项研究中，我们通过分子动力学模拟研究了剪纸石墨烯在剪切载荷下的剪切柔韧性。我们发现 kirigami 在调节石墨烯的剪切特性方面非常有效。通过在强度和柔韧性之间进行权衡，可以显着提高剪纸石墨烯的剪切柔韧性。使用更长的内部切口可以进一步提高灵活性。