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arXiv · 2209.02922

How Surface Roughness Affects the Interparticle Interactions at a Liquid Interface

Airi N. Kato·Yujie Jiang·Wei Chen·Ryohei Seto·Tao Li
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Abstract

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.

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Airi N. Kato, Yujie Jiang, Wei Chen, Ryohei Seto, Tao Li. 2022-09-07. How Surface Roughness Affects the Interparticle Interactions at a Liquid Interface. https://doi.org/10.1016/j.jcis.2023.03.041

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