title: Kink localization under asymmetric double-well potentials.
abstract: We study diffuse phase interfaces under asymmetric double-well potential energies with degenerate minima and demonstrate that the limiting sharp profile, for small interface energy cost, on a finite space interval is in general not symmetric and its position depends exclusively on the second derivatives of the potential energy at the two minima (phases). We discuss an application of the general result to porous media in the regime of solid-fluid segregation under an applied pressure and describe the interface between a fluid-rich and a fluid-poor phase.
authors.affiliation: Dipartimento di Scienze di Base e Applicate per l'Ingegneria, Sapienza Università di Roma, via A. Scarpa 16, I-00161 Roma, Italy. emilio.cirillo@uniroma1.it
authors.forename: Emilio N M
authors.initials: EN
authors.lastname: Cirillo
authors.forename: Nicoletta
authors.initials: N
authors.lastname: Ianiro
authors.forename: Giulio
authors.initials: G
authors.lastname: Sciarra