1B02 ゲル化ネマチック液晶の光散乱に基づく電気光学効果

概要

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The electro-optical effect for gelated nematic liquid crystal (GNLC) was investigated on the basis of the light scattering and the light transmittance measurements. The light scattering patterns observed under cross Nicols were similar to polymer spherelites and these patterns were not observed in an isotropic state of 5CB. These results indicate that a spherulite-like aggregate of liquid crystals was formed when the isotropic gel state was changed into the liquid crystalline gel state on cooling. This spherulite-like aggregate did not respond to the applied voltage of 100 V. However, when 3 mo1% of N,N'- dimethylfolmamide(DMF) was added to the GNLC, the magnitude of the light transmittance upon the application of electric voltage was improved in comparison with GNLC without DMF. This indicates that DMF may play an important role for an effective reduction of the intermolecular interaction between 5CB and gelling agents.
日本液晶学会の論文
1998-10-12