Textural transformations in islands on free standing Smectic C* liquid crystal films

Details Textural transformations in islands on free standing Smectic C* liquid crystal films Textural transformations in islands on free standing Smectic C* liquid crystal films

2006-02-08

arxiv.org/abs/cond-mat/0602222v2

Physics

Condensed Matter

Soft Condensed Matter

15 pages, 8 figures

Scientific paper

10.1103/PhysRevE.73.051705

We report on and analyze the textural transformations in islands, thicker circular domains, floating in very thin free standing chiral Smectic C* liquid crystal films. As an island is growing, an initial pure bend texture of the c-director changes into a reversing spiral at a critical size. Another distinct spiral texture is induced by changing the boundary condition at the central point defect in the island. To understand these transformations from a pure bend island, a linear stability analysis of the c-director free energy is developed, which predicts a state diagram for the island. Our observations are consistent with the theoretical phase diagram.

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