Figure 7

Illustration of the desorption mechanism in Vycor porous glass:
a) the system is at the saturation point; b) local cavitation events result in large clusters of open neighboring pores that act as e.g. Mie scatterers, hence the upturn in the scattered intensity at low Q (see curve 1 of Fig. 1); c) the cavitation events propagate a percolation transition; and d) all pores are empty.