Dynamical behavior of an evaporating nanomeniscus: A boundary condition problem at the local scale
| Autor: | R. Boisgard, Cédric Jai, J. P. Aimé |
|---|---|
| Přispěvatelé: | Centre de physique moléculaire optique et hertzienne (CPMOH), Université Sciences et Technologies - Bordeaux 1-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Materials science
Capillary action Evaporation General Physics and Astronomy Nanofluidics 02 engineering and technology 07.79.Lh 010402 general chemistry 01 natural sciences Physics::Fluid Dynamics Boundary value problem PACS 47.15.gm Atomic force microscopes Laminar flow Dissipation 021001 nanoscience & nanotechnology 0104 chemical sciences Shear (sheet metal) Condensed Matter::Soft Condensed Matter Classical mechanics Micro- and nano- scale flow phenomena Meniscus 0210 nano-technology 47.61.-k Thin film flows |
| Zdroj: | EPL-Europhysics Letters EPL-Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2008, 81 (3), pp.34003 (1-6). ⟨10.1209/0295-5075/81/34003⟩ |
| ISSN: | 0295-5075 1286-4854 |
| DOI: | 10.1209/0295-5075/81/34003⟩ |
| Popis: | International audience; Evaporation processes are a common feature in micro and nanofluidics where aqueous solutions are employed. Evaporation can be used as the driving phenomenon to control laminar flows in microchannels. The present analysis shows intricate phenomena, leading to opposite effects, induced by the thinning of a nanomeniscus. The viscous dissipation inside the nanomeniscus is the result of a competition between the capillary flow, due to evaporation, enhancing the dissipation and the boundary conditions at the air-liquid interface reducing the influence of the shear motion in the meniscus. Simple hydrodynamic arguments show how macroscopic concepts can apply to explain the dynamical behavior of a very small quantity of an oscillating liquid. © Europhysics Letters Association. |
| Databáze: | OpenAIRE |
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