A new order of liquids: polar order in nematic liquid crystals

Abstract

Given the widespread adoption of display technology based on nematic liquid crystals, the discovery of new nematic phases at thermodynamic equilibrium, although extremely rare, generates much excitement. The remarkable discovery...

Lowering of Electrostatic Actuator Driving Voltage and Increasing Generated Force Using Spontaneous Polarization of Ferroelectric Nematic Liquid Crystals

“…Material chemistry design principles for the ferroelectric nematic phase in rod-shaped liquid crystals have recently been established. [44,45] A simple but essential guideline for synthesis is that the rod-like molecules must have a large dipole moment. The dipole moment can be increased by creating a relatively positive polarity employing an electron-donating group at one end of a rigid molecule and a relatively negative polarity employing an electron-withdrawing group at the opposite end.…”

Alignment properties of a ferroelectric nematic liquid crystal on the rubbed substrates

“…Although efforts were made to achieve the FNLC phase through various structures, primary research has focused on using two LCs, DIO and RM734, known to have a ferroelectric nematic (NF) phase. 1,2,[13][14][15][16][17] In this study, a new, lesser-known LC is introduced, and the experimental results are explained.…”

High-g-factor phase-matched circular dichroism of second harmonic generation in chiral polar liquids

“…The recent discovery of novel ferroelectric nematic (N F ) liquid crystals with high fluidity and outstanding nonlinear optical response in flowing liquid matters are significant. [40][41][42][43][44][45][46][47] The chiral counterpart of N F , i.e., the helielectric nematic liquid crystals (HN*), exhibits chiral periodic polarization structures. 48,49 Appropriate polarization periodicities in the HN* state can significantly improve nonlinear optical conversion efficiency through a unprecedented phase-matching mechanism.…”

“…The recent discovery of novel ferroelectric nematic (N F ) liquid crystals with high fluidity and outstanding nonlinear optical response in flowing liquid matters are significant. 40–47 The chiral counterpart of N F , i.e. , the helielectric nematic liquid crystals (HN*), exhibits chiral periodic polarization structures.…”