论文标题
填充，滴定，解开：纳米校正底物的三个吸附机制
Filling, depinning, unbinding: Three adsorption regimes for nanocorrugated substrates
论文作者
论文摘要
我们研究通过将矩形凹槽评分到平面固体壁中形成的定期波纹底物，该底物通过远距离（分散）力与流体相互作用。假定凹槽在宏观上长，但它们的深度，宽度和分离都可以分子很小。我们表明，整个吸附过程可以分为三个部分，包括（i）\ emph {填充}毛细管液体的凹槽； （ii）\ emph {depinning}的液体气体接口从壁边缘开始； （iii）\ emph {unbrinding}从墙壁顶部的界面，伴随着其形状的快速但连续变平。使用非局部密度功能理论和介观界面模型，详细讨论了所有制度，以揭示整个过程的复杂性和影响其行为的微妙方面。特别是，表明默认现象的性质受壁柱的宽度（分开的凹槽）控制，而凹槽的宽度仅控制默认一阶转变的位置（如果存在）。
We study adsorption at periodically corrugated substrates formed by scoring rectangular grooves into a planar solid wall which interacts with the fluid via long-range (dispersion) forces. The grooves are assumed to be macroscopically long but their depth, width and separations can all be molecularly small. We show that the entire adsorption process can be divided into three parts consisting of (i) \emph{filling} the grooves by a capillary liquid; (ii) \emph{depinning} of the liquid-gas interface from the wall edges; and (iii) \emph{unbinding} of the interface from the top of the wall, which is accompanied by a rapid but continuous flattening of its shape. Using a nonlocal density functional theory and mesoscopic interfacial models all the regimes are discussed in some detail to reveal the complexity of the entire process and subtle aspects that affect its behaviour. In particular, it is shown that the nature of the depinning phenomenon is governed by the width of the wall pillars (separating grooves), whilst the grooves width only controls the location of the depinning first-order transition, if present.
