Perpendicular separations of a binary mixture under van der Waals confinement

We investigated the dynamics of a binary mixture confined within van der Waals (vdW) walls using molecular dynamics simulations. We discovered a novel phenomenon named perpendicular separations of two phases (PSTP). In the initial stage, central water molecules diffused, subsequently condensing symmetrically within the confinement’s mid-plane. In the later stage, as water droplets nucleate and grow, the resin separates perpendicularly into two films due to the action of bubblers and vdW walls, resulting in a hollow nanochannel. The mechanisms and conditions underlying PSTS are discussed. The results indicate that the concentration © of resin in the middle region is linearly decreased with temporal power. We propose a new mechanism for stabilizing nanochannels and films: dynamic “soft pillars” that prevent Rayleigh-like instability. Our findings could shed light on the manufacture of nanofilms and organic nanochannels, which could help advance bio-detection and energy fields.