Ragueneau Pierre, Caupin Frédéric, Issenmann Bruno
Institut Lumière Matière, Université de Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622 Villeurbanne, France.
Phys Rev E. 2022 Jul;106(1-1):014616. doi: 10.1103/PhysRevE.106.014616.
We report shear viscosity of heavy water supercooled 33K below its melting point, revealing a 15-fold increase compared to room temperature. We also confirm our previous data for the viscosity of supercooled light water and reach a better accuracy. Our measurements, based on the spontaneous Brownian motion of 350nm spheres, disagree at the lowest temperature with the only other available data, based on Poiseuille flow in a narrow capillary, which may have been biased by electro-osmotic effects. Here we provide a detailed description of the experiment and its analysis. We review the literature data about dynamic properties of water (viscosity, self-diffusion coefficient, and rotational correlation time), discuss their temperature dependence, and compare their decoupling in the two isotopes.
我们报告了在低于熔点33K下过冷重水的剪切粘度，结果显示与室温相比增加了15倍。我们还证实了我们之前关于过冷轻水粘度的数据，并提高了精度。我们基于350nm球体的自发布朗运动进行测量，在最低温度下与基于狭窄毛细管中泊肃叶流的唯一其他可用数据不一致，后者可能受到电渗效应的影响。在此，我们详细描述了实验及其分析。我们回顾了关于水的动态特性（粘度、自扩散系数和旋转相关时间）的文献数据，讨论了它们的温度依赖性，并比较了两种同位素中的解耦情况。
