Transition from Exponentially Damped to Finite-Time Arrest Liquid Oscillations Induced by Contact Line Hysteresis

Benjamin Dollet (1) , Elise Lorenceau (1) , François Gallaire

1 LIPhy - Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères]

To clarify the role of wetting properties on the damping of liquid oscillations, we studied the decay of oscillations of liquid columns in a U-shaped tube with controlled surface conditions. In the presence of sliding triple lines, oscillations are strongly and nonlinearly damped, with a finite-time arrest and a dependence on initial amplitude. We reveal that contact angle hysteresis explains and quantifies this solidlike friction.

Domaines: Matière Molle [cond-mat.soft]

Benjamin Dollet, Elise Lorenceau, François Gallaire. Transition from Exponentially Damped to Finite-Time Arrest Liquid Oscillations Induced by Contact Line Hysteresis. Physical Review Letters, 2020, 124 (10), ⟨10.1103/PhysRevLett.124.104502⟩. ⟨hal-02997310⟩