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Layering transitions at the free surface of a smectic liquid crystal

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Bahr,  Christian
Group Structure formation in soft matter, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Lucht, R., Bahr, C., & Heppke, G. (1998). Layering transitions at the free surface of a smectic liquid crystal. The Journal of Physical Chemistry B, 102(35), 6861-6864. doi:10.1021/jp981832a.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-B654-A
Abstract
We present an ellipsometric study of the free surface of the isotropic phase of a liquid-crystal compound possessing an isotropic−smectic-A transition. Approaching the bulk transition from above, a series of at least eight layering transitions is observed, indicating the successive formation of smectic layers at the surface. Although the growth of the surface smectic-A phase can be described by a logarithmic divergence, the current data allows for a better, if not unambiguous, description in terms of a crossover from logarithmic to power law divergence.