Distinct ferroelectric smectic liquid crystals consisting of achiral molecules with banana shape

被引：58

作者：

Niori, T ^{[1
]}

Sekine, T ^{[1
]}

Watanabe, J ^{[1
]}

Furukawa, T ^{[1
]}

Takezoe, H ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,DEPT ORGAN & POLYMER MAT,MEGURO KU,TOKYO 152,JAPAN

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1997年 / 301卷

关键词：

D O I：

10.1080/10587259708041785

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We found three smectic phases, SmX1, SmX2 and SmX3, in achiral compounds with banana shape. The SmX1 phase has a biaxial single molecular layer, along which polarization exists. The polarization precesses along the layer normal, and is aligned by applying an electric field. The spontaneous polarization is about 60 nC/cm(2) and shows a slight temperature dependence. The dielectric constant shows a larger value in SmX1 than those of the other phases, suggesting the Goldstone mode. The relaxation frequency is below 100 Hz.

引用

页码：337 / &

页数：7