Projects per year
Abstract / Description of output
Droplet motion can occur due to interaction with the surrounding vapour phase. We examine experimentally the motion of two adjacent droplets, either pure liquid or a binary mixture, without direct contact. A droplet is repelled or attracted by the (pinned) adjacent droplet which acts as a vapour source, depending on its initial concentration as well as the composition in the vapour, even for a pure liquid. The observation is explained by a theoretical model that combines evaporation and adsorption processes, which unifies the mechanism for both directions of motion (attraction and repulsion) and more importantly for both binary mixtures and pure liquid droplets. Good agreement is achieved between the theoretical model and experimental observations. A critical concentration is proposed to determine the transition between attractive and repulsive motion, this being a criterion to predict the droplet motion.
Original language | English |
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Journal | Langmuir |
Early online date | 5 Feb 2025 |
DOIs | |
Publication status | E-pub ahead of print - 5 Feb 2025 |
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Dive into the research topics of 'Long-Range Vapour-Mediated Interactions between Adjacent Droplets'. Together they form a unique fingerprint.Projects
- 2 Finished
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Convection and Interfacial Mass Exchange
Sefiane, K. & Orejon Mantecon, D.
1/01/20 → 15/09/23
Project: Research
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New Engineering Concepts from Phase Transitions: A Leidenfrost Engine
Sefiane, K., Stokes, A. & Walton, A.
1/09/17 → 30/11/20
Project: Research