Phase separation in multiply periodic materials with fine microstructures
Analysis of PDEs
2026-02-16 v2
Abstract
We study a Cahn-Hilliard model for phase separation in composite materials with multiple periodic microstructures. These are modeled by considering a highly oscillating potential. The focus of this paper is in the case where the scales of the microstructures are smaller than that of phase separation. We provide a compactness result and prove that the {\Gamma}-limit of the energy is a multiple of the perimeter. In particular, using the recently introduced unfolding operator for multiple scales, we show that the taking the limit of all of the scales together is equivalent to taking one limit at the time, starting from the smaller scale and keeping the larger fixed.
Cite
@article{arxiv.2506.14462,
title = {Phase separation in multiply periodic materials with fine microstructures},
author = {Riccardo Cristoferi and Luca Pignatelli},
journal= {arXiv preprint arXiv:2506.14462},
year = {2026}
}