arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.0362cond-mat.soft
收藏

螺旋填料与软球相变

Helical Packings and Phase Transformations of Soft Spheres in Cylinders

Matthew A. Lohr, Ahmed M. Alsayed, Bryan G. Chen, Zexin Zhang, Randall D. Kamien, Arjun G. Yodh

摘要:

研究了玻璃毛细管中温敏微球螺旋填料的相行为与体积分数的关系。稳定的包装与长程取向秩序似乎突然演变为无序状态的颗粒体积分数减少,与最近的硬球模拟。我们量化这种转变使用的相关性和取向的序参量psi_6的兼容性。共存的亚稳堆积,以及共存的有序和无序状态的出现,也被观察到。这些发现支持了准一维系统中类似相变行为的概念。

英文摘要:

The phase behavior of helical packings of thermoresponsive microspheres inside glass capillaries is studied as a function of volume fraction. Stable packings with long-range orientational order appear to evolve abruptly to disordered states as particle volume fraction is reduced, consistent with recent hard sphere simulations. We quantify this transition using correlations and susceptibilities of the orientational order parameter psi_6. The emergence of coexisting metastable packings, as well as coexisting ordered and disordered states, is also observed. These findings support the notion of phase transition-like behavior in quasi-1D systems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑