2C07 非対称バナナ型液晶の一軸性スメクチック相における電場誘起極性構造(2004年日本液晶学会討論会)

概要

論文の詳細を見る
In addition to symmetric bent-shaped molecules, asymmetric ones have been attracting considerable attention because of their characteristic mesophases. Here we report the evaluation of the polar structure of an asymmetric bent-shaped molecule shown in Fig.1 [1] using second-harmonic generation (SHG) experiments. SHG signal was observed under a triangular electric field in the smectic temperature range. SHG signal increased with increasing the electric field and did not saturate even under a high field. These experimental results imply the following orientational change ; The molecules (dipoles) freely rotate about their long axes parallel to the layer normal in the absence of a field, and electric-field-induced dipole reorientation occurs against thermal agitation.
日本液晶学会の論文
2004-09-26