Morphological characterization of spinodal decomposition kinetics
Fachbereich Physik, Bergische Universität Wuppertal, 42097 Wuppertal, Germany
2 Center for Fundamental and Advanced Technical Research, Romanian Academy, Mihai Viteazul 24, 1900 Timişoara, Romania
Published online: 15 March 1999
The time evolution of the morphology of homogeneous phases during spinodal decomposition is described using a family of morphological measures known as Minkowski functionals. They provide the characteristic length scale L of patterns in a convenient, statistically robust, and computationally inexpensive way. They also allow one to study the scaling behavior of the content, shape, and connectivity of spatial structures and to define the crossover from the early stage decomposition to the late stage domain growth. We observe the scaling behavior with , , and depending on the viscosity of the fluid. When approaching the spinodal density , we recover the prediction for the early time spinodal decomposition.
PACS: 05.70.Fh – Phase transitions: general aspects / 64.60.-i – General studies of phase transitions / 47.20.Hw – Morphological instability; phase changes
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999