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.

本研究在"plot-00.pdf"中展示了直径10 nm的镍纳米颗粒分别采用100 GPa（软质）与500 GPa（硬质）压头进行压缩时的临界分解剪切应力（CRSS），并将其作为颗粒圆度的函数进行绘图。由该图可见，颗粒圆度越高，其强度亦随之提升。图"plot-01.pdf"的绘制逻辑与之类似，不过本次研究的对象为直径20 nm的镍纳米颗粒。最后，图"plot-03.pdf"展示了多组镍纳米颗粒的临界分解剪切应力随颗粒直径（单位：nm）变化的关系，并与实验数据进行了对比。所有绘图所用的非实验数据，均通过LAMMPS模拟软件开展的分子动力学模拟生成，原子间相互作用采用嵌入原子法势（embedded atom method potential）进行建模。