1C06 ネマチック複合液晶におけるフレデリクス転移型メモリー性ストライプパターン(トピカルセッション-ソフトマターと液晶-, 2005年日本液晶学会討論会)

概要

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The dissipative structures were irreversibly induced in the nematic composites through a procedure that an electric voltage was applied in the direction perpendicular to the substrate surface of the cell in which the molecules were uniaxially oriented in the plane by rubbing treatment. The striped pattern is possibly formed by electrically induced reorientation of directors. We discuss : 1) the transient behavior of structure formation for composites thorough the evaluation of optical texture and dielectric constant, 2) the structural model for memorized pattern. The periodicity of the pattern structure was determined in the early stage during application of an electric voltage. The resultant dielectric constant and texture indicate that the tilted director of the composites was pinned after removal of an electric voltage. The incident beam angle dependence of resultant periodicity evaluated from the diffracted light indicates that the pattern probably consists of positive and negative tilted director domains, of which the absolute angle was equal.
日本液晶学会の論文
2005-09-05