Structural Rheology of Smectic Liquid Crystalline Phase

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  • Fujii Shuji
    Department of Chemistry, Nagaoka University of Technology

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  • スメクチック液晶相のレオロジーに関する研究
  • スメクチック エキショウソウ ノ レオロジー ニ カンスル ケンキュウ

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Abstract

The rheological properties of layered systems such as a thermotropic smectic liquid crystal and surfactant lyotropic lamellar phase are studied from the viewpoint of structural rheology. Many defects included into these layered systems significantly influence their physical and rheological properties. For instance, an unbinding transition of dislocation loops in the smectic phase drives the smectic-nematic transition. And oily streak defects in the lyotorpic lamellar phase provide the physical origin of the elasticity. We show how these structural defects are closely associated with linear- and nonlinear-rheological behaviors. And we show that these defects dominate not only their rheology but also the non-equilibrium structural transition such as shear-induced lamellar/onion transition.

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