Pattern Formation in Phase-Separating Gels with Spontaneous Shear

Details Pattern Formation in Phase-Separating Gels with Spontaneous Shear Pattern Formation in Phase-Separating Gels with Spontaneous Shear

2002-06-24

arxiv.org/abs/cond-mat/0206419v1

Phys. Rev. Lett. 89, 025702 (2002)

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 5 figures

Scientific paper

10.1103/PhysRevLett.89.025702

We study pattern formation in gels undergoing simultaneous phase separation and orientational ordering. A 2D numerical simulation is performed using a minimal model of nonlinear elasticity with density-anisotropy coupling. For strong positive coupling, the collapsed phase elongates along the phase boundary and buckles, creating a folded structure with paired topological defects. For negative coupling, soft elasticity of the swollen phase causes a droplet morphology as in liquid-liquid phase separation. Their possible realizations in nematic liquid-crystalline gels are discussed.

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