Cover Feature: The Chiral Twist‐Bend Nematic Phase (N* TB ) (Chem. Eur. J. 58/2019)

The Phase Transitions from Chiral Nematic toward Smectic Liquid Crystals

A Chen-Lubensky energy is used to investigate phase transitions from chiral nematic to smectic C* and smectic A* liquid crystal phases. We consider a liquid crystalline material Ω confined between two parallel plates, where the dimensions of Ω are assumed to be large relative both to the width of a smectic layer and the material’s chiral pitch. We take boundary conditions so that the smectic ph...

Nematic phase in the J(1)-J(2) square-lattice Ising model in an external field.

The J(1)-J(2) Ising model in the square lattice in the presence of an external field is studied by two approaches: the cluster variation method (CVM) and Monte Carlo simulations. The use of the CVM in the square approximation leads to the presence of a new equilibrium phase, not previously reported for this model: an Ising-nematic phase, which shows orientational order but not positional order,...

The orientational ordering of some non cylindrically symmetric solutes in nematic solvents, Israel J. Chem., 23, 283 - 289 (1983).

From the double-stranded helix to the chiral nematic phase of B-DNA: a molecular model.

B-DNA solutions of suitable concentration form left-handed chiral nematic phases (cholesterics). Such phases have also been observed in solutions of other stiff or semiflexible chiral polymers; magnitude and handedness of the cholesteric pitch are uniquely related to the molecular features. In this work we present a theoretical method and a numerical procedure which, starting from the structure...

Comment on ‘ ‘ Surface diffusion near the points corresponding to continuous phase transitions ’ ’ † J . Chem . Phys .

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