过冷轻水和重水的剪切粘度与 Stokes-Einstein 破缺
Shear viscosity and Stokes-Einstein violation in supercooled light and heavy water
AI总结：
本研究测量了过冷重水的剪切粘度并确认了轻水数据，发现基于布朗运动的测量结果与现有毛细管数据存在分歧，同时分析了两种同位素粘度比的显著增加及其动态性质的解耦现象。
摘要：
我们报告了重水在低于其熔点 33 K 的过冷状态下的剪切粘度，结果显示其与室温相比增加了 15 倍。我们还确认了之前关于过冷轻水粘度的数据，并达到了更高的精度。我们的测量基于 350 nm 球体的自发布朗运动，在最低温度下与唯一可用的其他数据存在分歧，后者基于窄毛细管中的 Poiseuille 流动，可能受到了电渗透效应的偏差影响。两种同位素之间的粘度比在最低温度下达到 2.2。一篇配套的 Letter [F. Caupin, P. Ragueneau, and B. Issenmann, arXiv:2112.09010] 讨论了这种巨大的动态同位素效应。在此我们提供了实验及其分析的详细描述。我们回顾了关于水动态性质（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，并比较了它们在两种同位素中的解耦现象。
英文摘要：
We report shear viscosity of heavy water supercooled $33\,\mathrm{K}$ 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 $350\,\mathrm{nm}$ 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. The viscosity ratio between the two isotopes reaches 2.2 at the lowest temperature. A companion Letter [F. Caupin, P. Ragueneau, and B. Issenmann, arXiv:2112.09010] discusses this giant dynamic isotopic effect. 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.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
