Evaporation of binary mixture nanofluid drops: Pattern formation

Maryam Maria Parsa (1) , Souad Harmand (2) , Khellil Sefiane (3) , Maxence Bigerelle (2)

1 VEDECOM Institute
2 LAMIH - Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201
3 Edin. - University of Edinburgh

The deposition patterns and internal flows inside drying binary nanofluid drops on heated substrates have been investigated. The evaporation of a binary mixture causes local concentration gradients at the air-liquid interface, resulting in a Marangoni flow. A temperature-dependant Marangoni flow has also been found, which has a crucial role in the final form of the dried deposits. The influence of substrate temperatures on the pattern formation has also been studied.

Mots clés: "Evaporation"; "Marangoni flow"; "Nanofluids"; "Pattern formation"; "Sessile drops"

Domaines: Mécanique [physics.med-ph]

Maryam Maria Parsa, Souad Harmand, Khellil Sefiane, Maxence Bigerelle. Evaporation of binary mixture nanofluid drops: Pattern formation. 10th Annual TechConnect World Innovation Conference and Expo, Held Jointly with the 19th Annual Nanotech Conference and Expo, and the 2016 National SBIR/STTR Conference, May 2016, Washington, United States. ⟨hal-03670405⟩