Effect of Chain Flexibility on Nematic-Smectic Transition

Details Effect of Chain Flexibility on Nematic-Smectic Transition Effect of Chain Flexibility on Nematic-Smectic Transition

1998-09-30

arxiv.org/abs/cond-mat/9809435v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.58.5997

The theory of nematic-smectic phase transition in the system of uniform semi-flexible chains with hard-core repulsion is presented. Both the general density-functional formalism the tube-model calculation show that the flexibility of the chains results in a strong first-order transition, in contrast to the common weak-cristallization scenario of the nematic-smectic transition in rigid rods. The calculated spinodal volume fraction of the uniform nematic phase and the period of the modulation instability are consistent with recent experimental results.

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