Dynamics and nano-rheology of interfacial water: general discussion.
Dynamics and nano-rheology of interfacial water: general discussion.
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界面水动力学和纳米流变学：一般讨论。
DOI：
10.1039/d3fd90064a
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发表时间：
2024
影响因子：
3.4
通讯作者：
Advincula XR
中科院分区：
文献类型：
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作者：
Advincula XR
安娜·T·布伊开始讨论尼基塔·卡沃金的论文：谢谢你这篇有趣的论文。关于Concement下的输运性质，当我们讨论您在您的论文(https://doi.)中所考虑的以埃为尺度的Concement时，我们将讨论Contact下的传输性质Org/10.1039/d3fd00115f)，将摩擦或热导等属性作为整个UID的宏观属性来讨论有多大意义？在只有几层水的情况下，我们应该更多地考虑与每一层水分子相关的摩擦或导热系数吗？尼基塔·卡沃金回答说：这是一个非常合理的问题。在介观尺度上常用的uid传输的一些描述符在极端纳米元素中确实失去了它们的意义。例如，当只有几层水时，滑移长度就不是一个很有意义的量。然而，在任意强粘结作用下，摩擦系数和导热系数仍然可以被减小(Net)。只有当两个界面非常接近时，才应该小心，因为不可能分开每个界面对摩擦系数的贡献，而应该考虑两个界面的总摩擦。
Anna T. Bui opened a discussion of the paper by Nikita Kavokine: Thank you for the interesting paper. Regarding transport properties under con nement, when we talk about con nement down to the Angstrom scale as you considered in your paper (https://doi. org/10.1039/d3fd00115f), to what extent is it meaningful to talk about properties like friction or thermal conductance as a macroscopic property for the whole uid? In cases down to 7 Å con nement, where there are only a few layers of water, should we be thinking more about the friction or thermal conductance associated with each layer of water molecules instead?Nikita Kavokine answered: This is a very legitimate question. Some of the descriptors of uid transport that are commonly used at the mesoscopic scale indeed lose their meaning in extreme nanocon nement. For example, the slip length is not a very meaningful quantity when there are only a few layers of water. However, the friction coefficient and thermal conductance can still be de ned in arbitrarily strong con nement. One should only be careful if two interfaces are very close to each other, as it is impossible to separate the contributions made by each of them to the friction coefficient, and one should consider instead the total friction from both interfaces.