Numerical simulation of the TGB phase of chiral liquid crystals

Hirot Ogawa, Nariya Uchida

Research output: Contribution to journalArticlepeer-review


We numerically minimized the Landau-de Gennes free energy to investigate the layer structure of the twist-grain boundary (TGB) phase of chiral liquid crystals. We compare the obtained structure with Scherk's minimial surface. For large twist angles, an unlocking of the director and the layer orientation reduces the effective layer bending rigidity, which causes a large deviation of the mean curvature from zero. At temperatures close to the TGB-cholesteric transition, we find a melting of the smectic layers in the whole grain boundary.

Original languageEnglish
Pages (from-to)17/[511]-21/[515]
JournalMolecular Crystals and Liquid Crystals
Issue number1
Publication statusPublished - 2007 Jan


  • Chiral liquid crystal
  • Defect structure
  • Minimal surface
  • Twist-grain-boundary


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