7 papers
Marangoni flow induced by crystallization in saline droplets
Théophile Gaichies, Javier Martínez-Puig, Javier Rodríguez Rodríguez
In this article, we study the flow induced by crystallization of sodium chloride in sessile droplets. We measure flow velocities on the order of 1 $\mathrm{cm.s^{-1}} during crysta…
A contaminant-concentration-dependent surface tension does not explain the absence of solutal Marangoni flow in evaporating droplets
Javier Martínez-Puig, Théophile Gaichies, Javier Rodríguez-Rodríguez
Theoretical models of evaporating droplets predict Marangoni flows orders of magnitude faster than those observed experimentally. While this discrepancy is often attributed to surf…
Air entrainment by an inclined smooth water jet
Théophile Gaichies, Arnaud Antkowiak, Anniina Salonen +1
Air entrainment can occur when a water jet impacts a water/air interface, a process central in various real systems, ranging from dam spills to breaking waves. Despite its prevalen…
Shape of an interface hit by an oblique jet
Theophile Gaichies, Anniina Salonen, Arnaud Antkowiak +1
We report on the shape taken by the interface of a liquid bath when hit by a smooth oblique steady jet. When the angle between the jet and the bath decreases below , a ca…
Capillary jet in a slab of foam
Théophile Gaichies, Bryan Giraud, Anniina Salonen +2
A capillary jet plunging into a quasi-2D slab of monodisperse foam of the same solution is studied experimentally. We show that the jet can have a drastic impact on the foam. At sm…
Effective water/water contact angle at the base of an impinging jet
Théophile Gaichies, Arnaud Antkowiak, Anniiina Salonen +1
The base of a jet impinging on an ultrapure water bath is studied experimentally. At the impact point, a train of capillary waves develops along the jet. By performing Particle Tra…
Mechanical activation of reversible bonds by low amplitude high frequencies excitations
Maziar Heidari, Théophile Gaichies, Ludwik Leibler +1
Reversible covalent or supramolecular bonds play an important role in materials science and in biological systems. The equilibrium between open and closed bonds and the association…