Hierarchy of Periodic patterns in the twist-bend nematic phase of mesogenic dimers

Abstract

Several attractive properties of hydrocarbon-linked mesogenic dimers have been discovered, a major feature of these has been the ability of dimers under confinement to form periodic patterns. At least six different types of stripe-like periodic patterns can be observed in these materials under various experimental conditions. Our most recent finding is the discovery of micrometre-scale periodic patterns at the N-Ntb phase transition interface, and sub-micrometre scale patterns in the Ntb phase. Layer-like sub-micrometre patterns were observed using three-photon excitation fluorescence polarizing microscopy, and these are being reported here.

25th International Liquid Crystal Conference, ILCC-2014, TN-O3.003

References in corpus (3)

• Nematic twist-bend phase with nanoscale modulation of molecular orientation
• Twist-bend heliconical chiral nematic liquid crystal phase of an achiral rigid bent-core mesogen
• Twist-bend nematic liquid crystals in high magnetic fields

Cited by in corpus (2)

• Electric field distortions in structures of the twist bend nematic (NTB) phase of a bent-core liquid crystal
• Characterization of the sub-micrometer hierarchy levels in the twist-bend nematic phase with nanometric helices via photopolymerization. Explanation for the sign reversal in the polar response