Topic
Marangoni effect
About: Marangoni effect is a research topic. Over the lifetime, 5336 publications have been published within this topic receiving 98562 citations. The topic is also known as: Gibbs–Marangoni effect.
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TL;DR: In this paper, surface tension-driven convection and buoyancy driven convection in a bounded cylindrical geometry with a free surface are studied for a range of aspect ratios and Nusselt numbers.
41 citations
TL;DR: In this article, controllable self-assembly of diphenylalanine (FF) in an evaporative dewetting solution is reported, where fluid mechanical dimensionless numbers, namely Rayleigh, Marangoni, and capillary numbers, are introduced to control the interaction between the solution and FF molecules in the selfassembly process.
Abstract: Self-assembled peptide nanostructures have unique physical and biological properties and promising applications in electrical devices and functional molecular recognition. Although solution-based peptide molecules can self-assemble into different morphologies, it is challenging to control the self-assembly process. Herein, controllable self-assembly of diphenylalanine (FF) in an evaporative dewetting solution is reported. The fluid mechanical dimensionless numbers, namely Rayleigh, Marangoni, and capillary numbers, are introduced to control the interaction between the solution and FF molecules in the self-assembly process. The difference in the film thickness reflects the effects of Rayleigh and Marangoni convection, and the water vapor flow rate reveals the role of viscous fingering in the emergence of aligned FF flakes. By employing dewetting, various FF self-assembled patterns, like concentric and spokelike, and morphologies, like strips and hexagonal tubes/rods, can be produced, and there are no signi...
41 citations
TL;DR: Numerical studies are presented comparing results of surfactant-influenced interface cases implementing the derived viscoelastic interfacial stress balance with those using a number of idealized stress balances, as well as a rigid no-slip surface, providing added insight into the altered dynamics that result from the presence of a surfactants monolayer.
41 citations
TL;DR: In this paper, the role of turbulence in laser melting of a steel alloy with surface active elements was investigated by using direct numerical simulations (DNS) and the results revealed the presence of two competing vortices driven by thermocapillary forces towards a local surface tension maximum.
41 citations
TL;DR: The Rayleigh-Benard instability for a clear fluid has its equivalent for a liquid saturated porous matrix in the Brinkman model as discussed by the authors, where the phenomenological Darcy momentum law cannot give rise by itself to an instability analogous to that of Benard-Marangoni.
Abstract: The Rayleigh–Benard instability for a clear fluid has its equivalent for a liquid saturated porous matrix. The phenomenological Darcy momentum law cannot give rise by itself to an instability analogous to that of Benard–Marangoni, but the Brinkman model at least allows it. A critical Marangoni number exists leading to cellullar patterns and, for realistic values of the permeability, it is proportional to the inverse of this last parameter.
41 citations