The inquiry of liquids and glass transition by heat capacity
The inquiry of liquids and glass transition by heat capacity
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通过热容探究液体和玻璃化转变
DOI：
10.1063/1.4773224
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发表时间：
2012-12-01
期刊：
影响因子：
1.6
通讯作者：
Wang, Wei Hua
中科院分区：
文献类型：
--
作者：
Ke, Hai Bo;Wen, Ping;Wang, Wei Hua
重新考虑简单液体和玻璃化转变之间的内在联系，我们试图用一个显式的液体模型来理解它们。液体被定义为由限制在不同势能井中的微小粒子组成的混合物，其中区分了处于统计平衡状态的微小粒子的平移运动以及振动和旋转。液体模型提供了在热容和液体中出现的基本运动之间建立定量关联的机会。对典型简单液体的热容进行了理论预测，与实验数据吻合较好。一系列实验数据证实，玻璃化转变源于液体中平移运动的落体不平衡。这项工作可能会提供一种新颖而直观的方式来揭示神秘液体和玻璃化转变的阴暗角落。
Reconsidering the intrinsic connection between simple liquids and the glass transition, we attempt to understand them with an explicit liquid model. Liquids are defined to the mixture composed of tiny particles restricted in non-identical potential energy wells, where translational motions of tiny particles in statistical equilibrium, as well as vibrations and rotations, are distinguished. The liquid model offers an opportunity to build up a quantitative correlation between heat capacity and the basic motions appearing in liquids. Agreements between theoretical prediction and experimental data on heat capacities of typical simple liquids are reached. A serial of experimental data confirm that the glass transition originates from the falling out-of-equilibrium of the translational motions in liquids. The work might provide a novel and intuitive way to uncover a shady corner of the mysterious liquids and the glass transition.