Abstract
We have observed the stable coexistence of target and spiral patterns in thick freely suspended films of a smectic- $C$ liquid crystal in a rotating electric field. In this system, patterns arise from a competition between boundary effects and bulk electric field torques and show a simple connection between spiral and target dynamics. We compare our observations in this driven system with experimental reports of spirals and targets in nonequilibrium systems such as large aspect ratio B\'enard convection.
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