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- W4301457439 abstract "Thin liquid films are central to everyday life. They are ubiquitous in modern technology (pharmaceuticals, coatings), consumer products (foams, emulsions) and also serve vital biological functions (tear film of the eye, pulmonary surfactants in the lung). A common feature in all these examples is the presence of surface-active molecules at the air-liquid interface. Though they form only molecularly-thin layers, these surfactants produce complex surface stresses on the free surface, which have important consequences for the dynamics and stability of the underlying thin liquid film. Here we conduct simple thinning experiments to explore the fundamental mechanisms that allow the surfactant molecules to slow the gravity-driven drainage of the underlying film. We present a simple model that works for both soluble and insoluble surfactant systems. We show that surfactants with finite surface rheology influence bulk flow through viscoelastic interfacial stresses, while surfactants with inviscid surfaces achieve stability through opposing surface-tension induced Marangoni flows." @default.
- W4301457439 created "2022-10-05" @default.
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- W4301457439 date "2016-08-07" @default.
- W4301457439 modified "2023-09-29" @default.
- W4301457439 title "Interfacial mechanisms for stability of surfactant-laden films" @default.
- W4301457439 doi "https://doi.org/10.48550/arxiv.1608.02180" @default.
- W4301457439 hasPublicationYear "2016" @default.
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