Phase Behaviors of Soft-core Particle Systems
Phase Behaviors of Soft-core Particle Systems
复制标题
软核粒子系统的相行为
DOI：
10.1007/s10118-019-2304-2
复制
发表时间：
2019-11
影响因子：
4.3
通讯作者：
Xu Ning
中科院分区：
文献类型：
--
作者：
Xu Ning
本文综述了我们最近在具有软核相互作用势的颗粒体系相行为方面的一些工作。势是纯排斥的和有界的，即，即使两个粒子完全重叠，它也是有限的。单边线性弹簧（谐）势就是其中的代表。该模型系统已成功地应用于研究干扰过渡过程，硬颗粒的刚性和无序堆积的形成，并建立干扰物理。这实际上是基于势的“硬”方面，因为在低密度和粒子重叠很小的情况下，势类似于硬球极限。在高密度下，势表现出其“软”的一面：随着密度的增加，有连续的重入结晶与许多类型的固相。利用势的双重性，我们从不同的角度研究了干扰跃迁的临界性，将干扰情形扩展到高密度，揭示了二维熔化的新颖密度演化，并发现了意想不到的准晶形成.令人惊讶的是，这样一个简单的势可以在相变中表现出如此丰富和意想不到的现象。本文所讨论的相行为也是高分子科学中的一个重要问题，它可能会对我们理解高分子体系有所启发，也可能会在高分子研究中产生新的想法。
This paper reviews some of our recent works on phase behaviors of particulate systems with a soft-core interaction potential. The potential is purely repulsive and bounded,i.e., it is finite even when two particles completely overlap. The one-sided linear spring (harmonic) potential is one of the representatives. This model system has been successively employed to study the jamming transition,i.e., the formation of rigid and disordered packings of hard particles, and establish the jamming physics. This is actually based on the “hard” aspect of the potential, because at low densities and when particle overlap is tiny the potential resembles the hard sphere limit. At high densities, the potential exhibits its “soft” aspect: with the increase of density, there are successive reentrant crystallizations with many types of solid phases. Taking advantage of the dual nature of the potential, we investigate the criticality of the jamming transition from different perspectives, extend the jamming scenario to high densities, reveal the novel density evolution of two-dimensional melting, and find unexpected formation of quasicrystals. It is surprising that such a simple potential can exhibit so rich and unexpected phenomena in phase transitions. The phase behaviors discussed in this paper are also highly regarded in polymer science, which may thus shed light on our understanding of polymeric systems or inspire new ideas in studies of polymers.
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DOI：
10.1209/0295-5075/86/66004
发表时间：
2008-08
期刊：
EPL (Europhysics Letters)
影响因子：
--
作者：
H. Shiba;Akira Onuki;Takeaki Araki
通讯作者：
H. Shiba;Akira Onuki;Takeaki Araki
DOI：
10.1063/1.4822101
发表时间：
2013-10
期刊：
The Journal of chemical physics
影响因子：
--
作者：
T. Terao
通讯作者：
T. Terao
DOI：
10.1209/0295-5075/90/56001
发表时间：
2009-09
期刊：
--
影响因子：
--
作者：
N. Xu;V. Vitelli;Andrea J. Liu;S. Nagel
通讯作者：
N. Xu;V. Vitelli;Andrea J. Liu;S. Nagel
影响因子：
2.4
作者：
Silbert, LE;Liu, AJ;Nagel, SR
通讯作者：
Nagel, SR
影响因子：
3.4
作者：
Xingbo Yang;M. Manning;M. Marchetti
通讯作者：
Xingbo Yang;M. Manning;M. Marchetti