Explanation

Liquid crystals whose molecules are arranged in a similar order to crystal are called smectic liquid products, also called smectic liquid crystal. ferroelectric liquid crystal is a form of the smectic phase. The normal angle of its molecule to the smectic layer is not zero, and it contains non racemic asymmetric carbon atoms. At the same time, its molecular dipole moment, especially the component perpendicular to the molecular long axis, is not zero. The chiral part of ferroelectric liquid crystal shows a large dielectric constant (>150), with spontaneous polarization and hysteresis loops similar to those of ferroelectric crystals. When the electric field is applied to ferroelectricity liquid crystal, its response time is inversely proportional to the polarization of ferroelectricity liquid crystal, and is proportional to the viscosity coefficient. Anti ferroelectric liquid crystal is a kind of physical phenomenon that amiferroelectricity liquid crystal transforms into ferroelectricity liquid crystal under the driving of electric field. And with asymmetric points in the AFLC of low molecular liquid crystals, the core structure of the benzene ring is adjacent to the conjugated phenyl bound carbon atom? The condition of combining CH: with the base at the center of asymmetry is better than that of combining CF (The base combination has stable amiferroelectricity. In addition, in the AFLC of macromolecule liquid crystal, the core structure is connected with odd carbon chains, which can also obtain amiferroelectricity alignment.

Classification