Induced smectic phase

Shear-induced smectic phase in isotactic polypropylene. 89... 

In the flexible chain polymer iPP, a shear-induced smectic phase with a periodicity of about 4 nm has been observed at temperatures below as well as above the melting point. Increasing the average molecular weight leads to a slightly larger periodicity. The smectic layers assemble in a fibrillar morph-... 

In this paper, the phase transition behavior, aggregation states, and also, a bistable and reversible light switching behavior based on light scattering have been investigated for the ternary (LCP/LC2/LC1) composite system in an induced smectic phase. 

Few new observations in the photocurable hyperbranched polyester/eutectic nematic liquid crystals (E7) system was reported by Kim et al. [163] Higher order mesophase is induced at some specific compositions, which is found absent in their individual components and possible escape of some ingredients observed during prolonged annealing. It is observed that in the eutectic mixture some components is expelled due to its weak affinity with the hyperbranched polyester. The induced smectic phase at 63-93 wt % E7 in the blend is influenced by the shift of eutectic nematic point. The presence of isotropic (I), isotropic + nematic (I + N), pure nematic (N), nematic +smectic A (N + SmA), and induced smectic A (SmA) phase is dependent on the composition and temperature. 

It has been reported that a binary mixture of nematic LCs with both strong and weak polar ends gives an induced smectic phase. In this study, it has been investigated that this rule can be applicable... 

Kim N, Huang TM, Kyu T, Nosaka M, Kudo H, Nishikubo T. Induced smectic phase in mixtures of hyperbranched polyester and liquid crystal mesogens. J Phys Chem B 2008 112 13225-30. 

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