Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 54: Poster Session 3

CPP 54.57: Poster

Donnerstag, 3. April 2014, 15:00–19:00, P2

Wetting induced structure formation in elastic porous media — •Zrinka Gattin, Ohle Claussen, Stephan Herminghaus, and Martin Brinkmann — Max Planck Institute for Dynamics and Self-Organization (MPIDS), Göttingen, Germany

When a deformable material is brought in contact with more than one fluid phase, the interplay between the elasticity and interfacial stresses can give rise to unexpected phenomena.

Motivated by experiments on the demixing of binary liquids in polymer gels we study the formation and interaction of liquid droplets in a 2D elastic medium. The phase separating liquids are represented with a lattice gas model, where the elastic matrix is introduced through a network of tethered particles having different affinities to the fluid phases. Our simulations show how the growth of the domains can be inhibited by the elastic medium, altering the dynamics and giving rise to characteristic patterns. The results are compared to predictions of a simple continuum model of the elastic matrix.