Polar Molecular Organisation in Liquid Crystals

Details Polar Molecular Organisation in Liquid Crystals Polar Molecular Organisation in Liquid Crystals

2003-02-04

arxiv.org/abs/cond-mat/0302067v1

MOL. CRYST. LIQ. CRYST., 395: 213-231 Part 2 2003

Physics

Condensed Matter

Materials Science

RevTex4, 10 pages, 8 figures, to be published in Mol. Cryst. Liq. Cryst

Scientific paper

Various possibilities of polar self-organisation in low molar mass nematic, smectic and columnar liquid crystals are discussed with particular focus on the underlying molecular symmetries and interactions. Distinction is made between vector and pseudovector polarities, their quantification in terms of molecular order parameters and their relation to spontaneous electric polarisation and to molecular chirality. The understanding of the molecular mechanisms that give rise to polar ordering in existing lamellar and columnar phases may be useful for the design of new polar variants of common a-polar liquid crystals. Keywords:Polar Nematics; Ferroelectric Liquid Crystals; Polar Ordering.

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