论文标题
粒度分布对多分散硬盘的影响
Effect of particle size distribution on polydisperse hard disks
论文作者
论文摘要
使用Monte Carlo模拟，我们系统地研究了粒度分布对多分散硬盘的相行为的影响。与常用的高斯般的多分散硬盘相比[commun。物理。 2，70（2019）]，我们发现具有对数正态和三角形分布的多分散硬盘系统的相行为显着差异。在对数正态分布的多分散硬盘系统中，尽管相图看起来与高斯样的多散射硬盘相似，但在沉积实验中无法观察到示型或固相的重新输入熔融。对于三角形分布的多分散硬盘系统，相位行为在质量上与高斯样和对数正态分布不同，我们无法达到大于0.06的真实多分散性的任何系统，这是由于三角形分布的特殊形状。我们的结果表明，确切的粒度分布在确定多分散硬盘的相位行为方面至关重要，并且对于不同的多分散硬盘系统，我们没有通用相图。
Using Monte Carlo simulations, we systematically investigate the effect of particle size distribution on the phase behaviour of polydisperse hard disks. Compared with the commonly used Gaussian-like polydisperse hard disks [Commun. Phys. 2, 70 (2019)], we find that the phase behaviour of polydisperse hard-disk systems with lognormal and triangle distributions are significantly different. In polydisperse hard-disk systems of lognormal distributions, although the phase diagram appears similar to that of Gaussian-like polydisperse hard disks, the re-entrant melting of hexatic or solid phase can not be observed in sedimentation experiments. For polydisperse hard-disk systems of triangle distributions, the phase behaviour is qualitatively different from the Gaussian-like and lognormal distributions, and we can not reach any system of true polydispersity larger than 0.06, which is due to the special shape of the triangle distribution. Our results suggest that the exact particle size distribution is of primary importance in determining the phase behaviour of polydisperse hard disks, and we do not have a universal phase diagram for different polydisperse hard-disk systems.
