title: Fragmentation and limits to dynamical scaling in viscous coarsening: an interrupted in situ x-ray tomographic study.
abstract: X-ray microtomography was used to follow the coarsening of the structure of a ternary silicate glass experiencing phase separation in the liquid state. The volumes, surfaces, mean, and Gaussian curvatures of the domains of minority phase were measured after reconstruction of the 3D images and segmentation. A linear growth law of the characteristic length scale ℓ∼t was observed. A detailed morphological study was performed. While dynamical scaling holds for most of the geometrical observables under study, a progressive departure from scaling invariance of the distributions of local curvatures was evidenced. The latter results from a gradual fragmentation of the structure in the less viscous phase that also leads to a power-law size distribution of isolated domains.
authors.affiliation: Laboratoire PMMH, UMR 7636 CNRS/ESPCI/University Paris 6 UPMC/University Paris 7 Diderot, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: David
authors.initials: D
authors.lastname: Bouttes
authors.affiliation: Surface du Verre et Interfaces, UMR 125 CNRS/Saint-Gobain, 93303 Aubervilliers, France.
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Gouillart
authors.affiliation: European Synchrotron Radiation Facility (ESRF), BP 220, 38043 Grenoble, France.
authors.forename: Elodie
authors.initials: E
authors.lastname: Boller
authors.affiliation: Surface du Verre et Interfaces, UMR 125 CNRS/Saint-Gobain, 93303 Aubervilliers, France.
authors.forename: Davy
authors.initials: D
authors.lastname: Dalmas
authors.affiliation: Laboratoire PMMH, UMR 7636 CNRS/ESPCI/University Paris 6 UPMC/University Paris 7 Diderot, 10 rue Vauquelin, 75231 Paris Cedex 05, France.
authors.forename: Damien
authors.initials: D
authors.lastname: Vandembroucq