Topographically induced hierarchical assembly and geometrical transformation of focal conic domain arrays in smectic liquid crystals

@article{Honglawan2012TopographicallyIH,
  title={Topographically induced hierarchical assembly and geometrical transformation of focal conic domain arrays in smectic liquid crystals},
  author={Apiradee Honglawan and Daniel A. Beller and Marcello Cavallaro and Randall D. Kamien and Kathleen J. Stebe and Shu Yang},
  journal={Proceedings of the National Academy of Sciences},
  year={2012},
  volume={110},
  pages={34 - 39}
}
Controlling topological defects in 3D liquid crystal phases is a crucial element in the development of novel devices, from blue-phase displays to passive biochemical sensors. However, it remains challenging to realize the 3D topological conditions necessary to robustly and arbitrarily direct the formation of defects. Here, using a series of short pillar arrays as topological templates, we demonstrate the hierarchical assembly of focal conic domains (FCDs) in smectic-A liquid crystals that break… 

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