Landau Theory of Blue Phases
- 1 December 1988
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics
- Vol. 165 (1) , 183-211
- https://doi.org/10.1080/00268948808082201
Abstract
The Landau theory of cholesteric blue phases (BP) is reviewed. The emphasis is on basic concepts, including (1) why BP appear between the disordered and ordinary helicoidal phases at sufficiently short pitch, and (2) why there are several cholesteric BP with different structures. These and other results in agreement with experimental findings are shown to follow from a simple theoretical model with no free parameters. Several examples of how calculations are carried out in practice are given.Keywords
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