Asymmetric deformation and disintegration of an active interface*

We combine conventional equilibrium liquid-liquid phase separation with a microtubule-based active fluid. The microtubules are strongly compartmentalized into one of the two coexisting phases where they generate autonomous flows.  The interaction between the autonomous flows and the soft and deformable phase interfaces leads to unique properties and structures that are not accessible in conventional equilibrium systems. We focus on understanding mechanisms by which activity-induced disintegration of a bulk interface and formation of complex materials in which active fluids are perforated with passive droplets. We also investigate the behavior of active interfaces next to a hard-wall boundary and how activity influences the wetting profiles.  By exploring various dimensionalities and geometries, we delve into understanding the impact of different structural arrangements on dynamic behaviors. Our system enables the possibility to transform the spontaneous turbulent flows into controllable directional movements and may open up a route towards constructing out-of-equilibrium soft materials with life-like functionalities.