Universität des Saarlandes, Lehrstuhl Adhäsion & Interphasen in Polymeren, Gebäude C6.3, D-66041 Saarbrücken, Germany.
Soft Matter. 2018 May 9;14(18):3601-3611. doi: 10.1039/c7sm02359f.
A long-debated problem related to glass formation in amorphous materials is the interplay of thermodynamic, kinetic and α-relaxation processes. For the first time, low-frequency dynamics, as well as kinetic or quasi-static thermal expansion coefficients of a non-crystallizable glass-former are simultaneously measured. Based on the feedback between low-frequency dynamics and morphology, the study supports the viewpoint that glass formation can be observed in internal equilibrium, i.e. beyond kinetics, and might stem from spontaneous local-scale morphological changes.
长期以来，有关非晶态材料玻璃形成的一个有争议的问题是热力学、动力学和α弛豫过程的相互作用。本文首次同时测量了不可结晶玻璃形成体的低频动力学以及动力学或准静态热膨胀系数。基于低频动力学与形态之间的反馈，该研究支持了这样一种观点，即在内部平衡中（即超越动力学范围）可以观察到玻璃形成，并且可能源于自发的局部尺度形态变化。
