论文标题
表面粗糙度如何影响液体界面处的颗粒间相互作用
How Surface Roughness Affects the Interparticle Interactions at a Liquid Interface
论文作者
论文摘要
胶体的形状在液体界面上很重要。我们通过实验和数值的单层压实来探索空气中的粗曲面纳米胶体之间的相互作用 - 水界面。由于粗糙度引起的毛细管吸引力，足够粗糙的系统表现出类似气体状态和封闭式干扰状态之间的非平凡中间状态。我们还发现，粗糙度诱导的摩擦降低了干扰点，并且由于表面浅层而导致的切向接触力会导致压缩单层的平面外塌陷。
Shapes of colloids matter at liquid interfaces. We explore the interactions between rough-surfaced nanocolloids at the air--water interface through the compaction of monolayers experimentally and numerically. Sufficiently rough systems exhibit a non-trivial intermediate state between a gas-like state and a close-packed jamming state due to roughness-induced capillary attraction. We also find that roughness-induced friction lowers the jamming point, and the tangential contact force owing to surface asperities can cause a gradual off-plane collapse of the compressed monolayer.
