Fractal pattern formation in nanosuspension sessile droplets via evaporation-spreading on a glass substrate
| Autor: | M. Hadj-Achour, David Brutin |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Diffusion
Evaporation Thermodynamics Wetting Nanofluid Instability law.invention Droplet Physics::Fluid Dynamics Fingering instability Colloid and Surface Chemistry Fractal Saffman–Taylor law Materials Chemistry Newtonian fluid Colloids Physical and Theoretical Chemistry Crystallization Pattern Chemistry Surfaces Coatings and Films Chemical physics Biotechnology |
| Zdroj: | Colloids and Interface Science Communications. 1:43-46 |
| ISSN: | 2215-0382 |
| DOI: | 10.1016/j.colcom.2014.06.007 |
| Popis: | We report a fingering instability that occurs during the spreading and evaporation of a nanosuspension droplet. The patterns has a fractal structure similar to those reported by N. Shahidzadeh-Bonn and al. (2008) for salt crystallisation, during evaporation of saturated Na 2 SO 4 on a hydrophilic surface. The fingering instability has been widely studied for both Newtonian and non-Newtonian fluids. However, this report describes the first time that a fingering instability is observed for the spreading of a nanosuspension sessile droplet. In this study, we demonstrate that in certain cases, the contact line evolves through different spreading regimes according to J. De Coninck et al. (2001) with an enhancement in the evaporation rate due the formation of the fractal patterns. |
| Databáze: | OpenAIRE |
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