Complex phase behaviour from simple potentials
Complex phase behaviour from simple potentials
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简单势的复杂相行为
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
G. Malescio
中科院分区：
文献类型：
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作者：
G. Malescio
简单对势，其中“简单”一词指的是各向同性的、涉及单组分系统的势，可以用来描述具有超分子结构的物质之间的有效相互作用。通过适当地选择分子间距离的功能依赖，通过这些势可以以平均的方式考虑大分子内部自由度的影响。这可能会产生与典型单原子系统截然不同的相现象。在这里，我们回顾了一些简单的模型电位，它们表现出不寻常的特征，即不像氩，并讨论了吸引力和排斥力在决定它们的相行为中的作用。
Simple pair potentials, where the term ‘simple’ denotes potentials that are isotropic and refer to one-component systems, can be used to describe effective interactions among substances with supramolecular architecture. By suitably choosing the functional dependence on the intermolecular distance, through such potentials it is possible to take into account, in an average way, the effect of the internal degrees of freedom of the macromolecules. This may give rise to phase phenomena that are radically different from those characterizing typical monoatomic systems. Here we review a number of simple model potentials presenting unusual, i.e. not argon-like, features and discuss the role of attraction and repulsion in determining their phase behaviour.