Methylene- and thioether-linked cyanobiphenyl-based liquid crystal dimers CB<i>n</i>SCB exhibiting room temperature twist-bend nematic phases and glasses

Hybrid Rod-Like and Bent-Core Liquid Crystal Dimers Exhibiting Biaxial Smectic a and Nematic Phases

Fluctuation modes of a twist-bend nematic liquid crystal

A twist-bend nematic to an intercalated, anticlinic, biaxial phase transition in liquid crystal bimesogens.

In this article we describe for bimesogens the first observed transition from a "heliconical" twist-bend nematic liquid crystal to a novel biaxial, anticlinic, intercalated lamellar phase. The phase behaviour and structures of both polymorphs is similar to that of polymers, confirming that bimesogens can act as model systems for main chain liquid crystal polymers, and in principle are separate ...

The dependency of twist-bend nematic liquid crystals on molecular structure: a progression from dimers to trimers, oligomers and polymers.

This article gives an overview on recent developments concerning the twist-bend nematic phase. The twist-bend nematic phase has been discussed as the missing link between the uniaxial nematic mesophase (N) and the helical chiral nematic phase (N*). After an introduction discussing the key physical properties of the NTB phase and the methods used to identify the twist-bend nematic mesophase this...

Splay bend elasticity of a bent-core nematic liquid crystal.

We measured the splay (K11) and bend (K33) elastic constants in the nematic phase of a bent-core liquid crystal. In the vicinity of the nematic-isotropic transition temperature K33 is proportional to the square of the order parameter. In the nematic range K11 increases monotonically with decreasing temperature, whereas K33 is practically independent of temperature and is smaller than K11 . K33 ...