Movie S2.

Time series of fluorescence micrographs of a PSM (DOPC/SM/chol/Gb3/Texas Red DHPE, 39.5:35:20:5:0.5) prepared on a pore with rpore = 2.75 μm. The movie (30 fps) shows the coalescence of a diffusing center lo domain with a rim lo domain that leads to an immobilized larger rim lo domain.