纳米线断裂成纳米颗粒链的动力学Monte Carlo模型
Kinetic Monte Carlo Model of Breakup of Nanowires into Chains of Nanoparticles
摘要：
一个动力学蒙特卡罗方法被应用到研究的纳米线的形状不稳定性，导致他们打破成链的纳米粒子。我们的方法可以用来探索动力学特征的过程中，对应的实验结果，但不能解释的连续机制，让人想起描述的高原瑞利不稳定性液体射流。例如，我们观察到长寿命的哑铃型碎片和其他典型的非液体射流特性的过程中，以及确认观察到的晶格取向依赖的单晶纳米线的破碎过程。我们提供的过程动力学的快照，并详细说明了的的终末效应，以及对所得纳米粒子的形态。
英文摘要：
A kinetic Monte Carlo approach is applied to studying shape instability of nanowires that results in their breaking up into chains of nanoparticles. Our approach can be used to explore dynamical features of the process that correspond to experimental findings, but that cannot be interpreted by continuum mechanisms reminiscent of the description of the Plateau-Rayleigh instability in liquid jets. For example, we observe long-lived dumbbell-type fragments and other typical non-liquid-jet characteristics of the process, as well as confirm the observed lattice-orientation dependence of the breakup process of single-crystal nanowires. We provide snapshots of the process dynamics, and elaborate on the nanowire-end effects, as well as on the morphology of the resulting nanoparticles.
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