Department of Materials Science and Engineering, University of California, Davis, California 95616, USA.
Science and Technology Division, Corning Incorporated, Corning, New York 14831, USA.
J Chem Phys. 2017 Feb 28;146(8):081103. doi: 10.1063/1.4977085.
All families of inorganic glass-forming liquids display non-Newtonian rheological behavior in the form of shear thinning at high shear rates. Experimental evidence is presented to demonstrate the existence of remarkable universality in this behavior, irrespective of chemical composition, structure, topology, and viscosity. However, contrary to intuition, in all cases the characteristic shear rates that mark the onset of shear thinning in these liquids are orders of magnitude slower than the global shear relaxation rates. Attempt is made to reconcile such differences within the framework of the cooperative structural relaxation model of glass-forming liquids.
所有无机玻璃形成液体的家族在高剪切速率下以剪切变稀的形式表现出非牛顿流变行为。实验证据表明，这种行为存在显著的普遍性，无论化学成分、结构、拓扑和粘度如何。然而，与直觉相反，在所有情况下，这些液体中剪切变稀开始的特征剪切速率都比整体剪切松弛速率慢几个数量级。尝试在玻璃形成液体的协同结构松弛模型框架内协调这些差异。
