A SIMPLE PHYSICAL PICTURE OF LIQUID-GLASS TRANSITION
A SIMPLE PHYSICAL PICTURE OF LIQUID-GLASS TRANSITION
复制标题
液态玻璃转变的简单物理图
DOI：
10.1063/1.472766
复制
发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Hajime Tanaka
中科院分区：
文献类型：
--
作者：
Hajime Tanaka
我们在这里展示了一个简单的液体-玻璃转变的物理图像，它定性地解释了从强玻璃到脆玻璃极限的大部分动态特征。我们将分子的动态环境分为松散和紧密的笼子。然后，玻璃化转变的特征在于两个转变：（i）在交叉温度Tc下出现紧密笼，以及（ii）在Vogel-Fulcher温度T0下松散笼消失。我们建议，玻璃的脆弱性是强烈相关的相对重要性的拓扑限制对各向异性的吸引力的分子间相互作用形成紧密的笼子。
We demonstrate here a simple physical picture of liquid–glass transition, which qualitatively explains most of the dynamic features from the strong‐glass to the fragile‐glass limit. We classify the dynamic environment of a molecule into loose and tight cages. Glass transition is then characterized by two transitions: (i) the appearance of tight cages at the crossover temperature Tc and (ii) the disappearance of loose cages at the Vogel–Fulcher temperature T0. We propose that the fragility of glass is strongly correlated with the relative importance of the topological confinement against the anisotropic attractive intermolecular interactions for the formation of tight cage.