Fig. 3.

Three-phase coexistence. (A) Simulations display three-phase coexistence where a polymer-dense droplet prewets a phase-separated membrane. Views of time-averaged tether density, membrane composition, and polymer density show a tether and polymer-dense phase rich in ordered components, an ordered membrane phase with a small amount of tethers, and a disordered membrane phase devoid of tethers. (B) Phase diagram over membrane and tether composition extracted from the simulation in A. Membrane and tether compositions falling inside the blue triangle split into three phases, each with a composition given by the vertices of the triangle. Black X corresponds to the surface composition of the simulation in A. (C) Polymer density profiles, as a function of distance from the membrane in each of the three phases. (D) Snapshots of simulations run at compositions corresponding to the endpoints of three-phase coexistence.