DISTINCT FERROELECTRIC SMECTIC LIQUID-CRYSTALS CONSISTING OF ACHIRAL MOLECULES WITH BANANA SHAPE

Authors
NIORI T SEKINE T WATANABE J FURUKAWA T TAKEZOE H
Citation
T. Niori et al., DISTINCT FERROELECTRIC SMECTIC LIQUID-CRYSTALS CONSISTING OF ACHIRAL MOLECULES WITH BANANA SHAPE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 301, 1997, pp. 337
Citations number
5
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
301
Year of publication
1997
Database
ISI
SICI code
1058-725X(1997)301:<337:DFSLCO>2.0.ZU;2-A
Abstract
We found three smectic phases, SmX1, SmX2 and SmX3, in achiral compoun ds with banana shape. The SmX1 phase has a biaxial single molecular la yer, along which polarization exists. The polarization precesses along the layer normal, and is aligned by applying an electric field. The s pontaneous polarization is about 60 nC/cm(2) and shows a slight temper ature dependence. The dielectric constant shows a larger value in SmX1 than those of the other phases, suggesting the Goldstone mode. The re laxation frequency is below 100 Hz.