Abstract The tensile process of nanowires (NWs), in which one end of a NW is fixed, and the load is applied to the other end, is investigated via molecular dynamics (MD). Here, we pay attention to length-dependent mechanical properties of heterostructured Au-Ag NWs under the above tensile form. It was discovered that all the samples became stronger except for the shortest one with the length of 4 nm and the load on the Ag end with the decrease of length. Meanwhile, we found that all samples with the load on Ag ends outperformed the same NWs with the load on Au ends in terms of yield strengths and elongations. Meanwhile, the NWs with the load on Ag ends may exhibit a better performance in terms of conductivity. A reasonable analysis from the perspective of radial distribution function has been developed to explain above phenomena.

中文翻译：

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长度对不同末端负载的 Au-Ag 异质结构纳米线的拉伸行为的影响：分子动力学研究

摘要 通过分子动力学 (MD) 研究了纳米线 (NW) 的拉伸过程，其中 NW 的一端固定，另一端施加负载。在这里，我们关注在上述拉伸形式下异质结构 Au-Ag NW 的长度相关机械性能。发现除了最短的样品长度为 4 nm 和 Ag 端的负载随着长度的减少外，所有样品都变得更坚固。同时，我们发现在屈服强度和伸长率方面，所有在 Ag 端负载的样品都优于在 Au 端负载的相同 NW。同时，负载在银端的纳米线在导电性方面可能表现出更好的性能。从径向分布函数的角度进行了合理的分析来解释上述现象。