Af. Craievich et al., TIME EVOLUTION OF THE STRUCTURE-FUNCTION AND DYNAMICAL SCALING IN POROUS SNO2 DRY GELS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 97(1-4), 1995, pp. 78-81
An in situ study of the structural evolution of a porous SnO2 dry gel,
under isothermal conditions, was carried out by means of the SAXS tec
hnique. The time evolution of the structure function is in agreement w
ith the predictions of computer simulations for advanced stages of pha
se separation in binary materials. Dynamical scaling properties of the
structure function of the porous system were verified. This study sug
gests that the evolution of microporosity occurs by a pure coagulation
mechanism.