Observation of Interfacial Instability of an Ultrathin Water Film
Observation of Interfacial Instability of an Ultrathin Water Film
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超薄水膜界面不稳定性的观察
DOI：
10.1103/physrevlett.128.144502
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发表时间：
2022
影响因子：
8.6
通讯作者：
Takamatsu Hiroshi
中科院分区：
文献类型：
--
作者：
Tomo Yoko;Nag Sarthak;Takamatsu Hiroshi
我们使用透射电子显微镜观察了封装在石墨烯纳米卷内的几纳米厚的水膜的不稳定性。膜，这是后，留下的一个弯月面衰退，形成沿着的长度的纳米卷的波纹的距离只有20%-44%的经典Plateau-Rayleigh不稳定性理论预测。通过理论分析解释了结果，该理论分析结合了水膜和石墨烯层之间的货车范德华相互作用的效果。我们得出了重要的见解，在纳米尺度的限制和纳米流体系统中的液体的行为。
We observed the instability of a few-nanometer-thick water film encapsulated inside a graphene nanoscroll using transmission electron microscopy. The film, that was left after recession of a meniscus, formed ripples along the length of the nanoscroll with a distance only 20%–44% of that predicted by the classical Plateau-Rayleigh instability theory. The results were explained by a theoretical analysis that incorporates the effect of the van der Waals interactions between the water film and the graphene layers. We derived important insights into the behavior of liquid under nanoscale confinement and in nanofluidic systems.