Phase transitions and soft elasticity of smectic elastomers

Details Phase transitions and soft elasticity of smectic elastomers Phase transitions and soft elasticity of smectic elastomers

2004-09-23

arxiv.org/abs/cond-mat/0409610v2

Phys. Rev. Lett. 94, 018304 (2005)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.94.018304

Smectic-C elastomers can be prepared by crosslinking, e.g., liquid crystal polymers, in the smectic-A phase followed by a cooling through the smectic-A to smectic-C phase transition. This transition from $D_{\infty h}$ to $C_{2h}$ symmetry spontaneously breaks rotational symmetry in the smectic plane as does the transition from a smectic-A to a biaxial smectic phase with $D_{2h}$ symmetry. We study these transitions and the emergent elasticity of the smectic-C and biaxial phases in three related models and show that these phases exhibit soft elasticity analogous to that of nematic elastomers.

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