Antiferroelectric Liquid Crystals

Modulated Hexatic-B* with giant electroclinic effect rather than anticlinic Hexatic-I A * —A novel mechanism for stabilizing antiferroelectricity below Smectic-C A *

“…Takanishi et al [14] further studied another similar compound TFMHPNCBC; they concluded that antiferroelectricity in hexatic ordering results from the same anticlinic structure and the same intermolecular interaction, ascribing the increase in layer spacing to a change in the molecular interdigitation but not in the molecular conformation. The layer spacing increase has also been observed in other compounds and a mixture [15][16][17].…”

10.1: Invited Paper: Future Antiferroelectric Liquid Crystal Displays

“…If we apply an electric field in any direction along the layers, we will unwind the helix and this (dielectric) action has neither threshold nor hysteresis. What has often, in the last five years, been highlighted as "thresholdless antiferroelectric" [2] is, in fact, something completely different, namely a dielectric action on a surface-stabilized ferroelectric. This thresholdless, continuous, mode is compared to the bistable mode with threshold in Fig.…”