## Cholesteric liquid crystals: the blue phase and the analogy with 3He-A |

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### Contents

BJfi 1 Hard Sphere Packings | 6 |

Planar Hexagonal 0rder | 8 |

Planar Pentagonal 0rder | 9 |

37 other sections not shown

### Common terms and phrases

amplitude Appendix assumed biaxial blue phase structures BPII Bragg plane Bragg scattering bulk energy bulk terms cholesteric pitch coefficients constant in space curvature curved space cylinders defined deGennes describe disordered phase distorted system distortion energy double twist elastic constants elastic energy et.al field n(r figure flat space fourth order Frank energy Frank free energy free energy gives global order gradient energy gradient expansion gradient terms He-A Hornreich and Shtrikman instability intrinsic curvature isotropic phase Landau Landau theory latent heat lattice constant lowest order Meiboom and Sammon minimized nematic non-uniform non-zero order transition orientation parallel transport pitch axis platelets polarization quantities reflection band requires result rotation second order slowly varying space groups sphere spiral phase spiral texture stationary conditions Stegemeyer surfaces symmetry tensor order parameter Tr B2 traceless transition temperature uniaxial limit uniaxial texture unit vector vanishes vector field wavelengths wavevectors zero