Movie S2.

The last snapshot with the instantaneous (not time-averaged) profiles of density and temperatures across the hot surface of the film at Th|Tc=79.4|60.5K. The movie illustrates the steady regime of evaporation, at which the density profile is almost static, and only the longitudinal Tx (red dots) and transverse Ty (green dots) experience the natural fluctuations. The point of temperature divergence appears at very low number density within the interphase layer, which implies the fast energy exchange between atoms there, as discussed in Evaporation Coefficient from MD Simulation.