Nickel nano-particle compression plots

In plot-00.pdf we show the critically resolved shear stress (CRSS) of a 10 nm wide nickel nano-particle compressed using a 100 GPa (soft) and a 500 GPa (hard) indenter plotted as a function of the particle's roundness. From the plot it is clear that as the roundness of the particle increases the strength also increases. The figure "plot-01.pdf" has a similar interpretation, however, in this case the nickel nano-particle is 20 nm wide. Finally figure "plot-03.pdf" shows the CRSS of many nano-particles plotted as a function of particle diameter (nm) with comparison to experimental data. For all plots the data (aside from the experimental data) was generated using molecular dynamics simulations carried out using the LAMMPS simulation software with the atomic interactions modeled using an embedded atom method potential.

在plot-00.pdf中，我们针对宽度为10 nm的镍纳米颗粒，分别采用100 GPa（软质）与500 GPa（硬质）压头进行压缩，得到其临界分解剪切应力（Critically Resolved Shear Stress, CRSS），并将该应力作为颗粒圆度的函数进行绘图。由该图可见，随着纳米颗粒圆度提升，其强度亦随之升高。图plot-01.pdf的阐释逻辑与上述内容一致，但该图中的镍纳米颗粒宽度为20 nm。最后，图plot-03.pdf展示了多组纳米颗粒的临界分解剪切应力随颗粒直径（单位：nm）的变化关系，并将模拟结果与实验数据进行了对比。所有图像的数据（实验数据除外）均通过分子动力学（Molecular Dynamics, MD）模拟生成，模拟过程采用LAMMPS仿真软件完成，原子间相互作用通过嵌入原子法（Embedded Atom Method, EAM）势进行建模。