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Nanoscale thin-film flows with thermal fluctuations and slip
Physical Review E ( IF 2.4 ) Pub Date : 2020-11-13 , DOI: 10.1103/physreve.102.053105
Yixin Zhang , James E. Sprittles , Duncan A. Lockerby

The combined effects of thermal fluctuations and liquid-solid slip on nanoscale thin-film flows are investigated using stochastic lubrication equations (SLEs). The previous no-slip SLE for films on plates is extended to consider slip effects and a new SLE for films on fibers is derived, using a long-wave approximation to fluctuating hydrodynamics. Analytically derived capillary spectra, which evolve in time, are found from the new SLEs and compared to molecular dynamics simulations. It is shown that thermal fluctuations lead to the generation and growth of surface waves, and slip accelerates this growth. SLEs developed here provide useful tools to study nanoscale film dewetting, nanofiber coating, and liquid transport using nanofibers.

中文翻译:

具有热波动和滑移的纳米级薄膜流

使用随机润滑方程(SLE)研究了热涨落和液固滑动对纳米级薄膜流的综合影响。扩展了先前用于平板上薄膜的无滑移SLE,以考虑滑移效应,并使用长波近似来波动流体力学,从而得出了适用于纤维上薄膜的新SLE。从新的SLE中发现了随时间变化的分析得出的毛细管光谱,并将其与分子动力学模拟进行了比较。结果表明,热波动会导致表面波的产生和增长,而滑动会加速这种增长。此处开发的SLE提供了有用的工具,用于研究纳米级薄膜去湿,纳米纤维涂层和使用纳米纤维的液体传输。
更新日期:2020-11-13
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