Martinez-Garcia Julio Cesar, Rzoska Sylwester J, Drzozd-Rzoska Aleksandra, Martinez-Garcia Jorge, Mauro John C
University of Berne, Freiestrasse 3, Berne CH-3012, Switzerland.
1] Institute of High Pressure Physics, Polish Academy of Sciences, ul. Sokołowska 27/39, Warsaw 01-143, Poland [2] Institute of Physics, University of Silesia, ul. Uniwersytecka 4, Katowice 40-007, Poland.
Sci Rep. 2014 Jun 4;4:5160. doi: 10.1038/srep05160.
In the last decade the challenging analysis of previtreous behavior of relaxation time (τ(T)) in ultraviscous low molecular weight liquids led to the conceptual shift of the glass transition physics toward theories not predicting a "finite-temperature" divergence. This "breakthrough" experimental finding was strengthened by the discovery that "dynamic" (i.e. from τ(T) fitting) and "thermodynamic" estimations of the "ideal glass" (Kauzmann) temperature do not match, what in fact questioned its existence. In this report, due to the novel way of analysis based on the transformation of τ(T) experimental data to the activation energy temperature index form, the clear prevalence of the "finite-temperature" divergence is proved. The obtained "dynamic" singular temperatures clearly coincide with "thermodynamic" estimations of the Kauzmann temperature, thus solving also the second mystery. The comprehensive picture was obtained due to the analysis of 55 experimental data-sets, ranging from low molecular weight liquids and polymers to liquid crystal and plastic crystals.
在过去十年中，对超粘性低分子量液体中弛豫时间（τ(T)）的玻璃体前行为进行的具有挑战性的分析，导致玻璃化转变物理学的概念向不预测“有限温度”发散的理论转变。“动态”（即通过τ(T)拟合）和“热力学”对“理想玻璃”（考兹曼）温度的估计不匹配这一发现强化了这一“突破性”实验结果，这实际上对其存在提出了质疑。在本报告中，由于基于将τ(T)实验数据转换为活化能温度指数形式的新颖分析方法，证明了“有限温度”发散的明显普遍性。所获得的“动态”奇异温度与考兹曼温度的“热力学”估计明显一致，从而也解决了第二个谜团。通过对55个实验数据集的分析获得了全面的情况，这些数据集涵盖了从低分子量液体和聚合物到液晶和塑性晶体。
