Traditionally, the manipulation of contact mechanisms has been adopted as the primary strategy to tailor the friction properties of surfaces. On the contrary, the detaching process involving the local deformation and failure at the interface has been considered relatively less important. Here, we present a new approach toward the friction control of amorphous carbon through the plasticity and resultant transition of deformation mode on nanopatterned surfaces. Depending on the topography of the nanopatterns, the mechanical responses of the surfaces alter from elastic fracture to plastic flow, through which the friction coefficient changes by a factor of 5 without manipulation of the intrinsic structure of the material.

中文翻译：

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纳米图案非晶碳的变形模式摩擦控制

传统上，接触机制的操纵已被用作调整表面摩擦特性的主要策略。相反，涉及界面处的局部变形和破坏的分离过程被认为相对不太重要。在这里，我们提出了一种通过可塑性以及纳米图案化表面上的变形模式转变来控制无定形碳的摩擦的新方法。取决于纳米图案的形貌，表面的机械响应从弹性断裂变为塑性流动，通过该摩擦，摩擦系数变化了5倍，而无需控制材料的固有结构。