Molecular theory of layer contraction in smectic liquid crystals

M.V. Gorkunov, M.A. Osipov

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The period of the layered structure in smectic A and smectic C liquid crystal phases has been calculated numerically by direct minimization of the mean-field free energy which takes into account the interaction between molecules in adjacent smectic layers. The smectic layer spacing is calculated for two systems characterized by conventional and anomalously weak layer contraction in the smectic C phase. It is then compared with the simple estimate based on the average projection of the molecular long axis on the smectic layer normal. For both systems, temperature variation of the average molecular projection is qualitatively similar to that of the calculated layer spacing although certain quantitative deviations exist.
LanguageEnglish
Pages465101-465101
Number of pages0
JournalJournal of Physics: Condensed Matter
Volume20
Issue number46
DOIs
Publication statusPublished - 19 Nov 2008

Fingerprint

Smectic liquid crystals
molecular theory
Liquid Crystals
Liquid crystals
Free energy
contraction
liquid crystals
Molecules
Temperature
projection
spacing
free energy
deviation
optimization
estimates
molecules

Keywords

  • soft matter
  • liquids and polymers
  • optics
  • quantum optics and lasers
  • Condensed matter
  • structural
  • mechanical & thermal

Cite this

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Molecular theory of layer contraction in smectic liquid crystals. / Gorkunov, M.V.; Osipov, M.A.

In: Journal of Physics: Condensed Matter, Vol. 20, No. 46, 19.11.2008, p. 465101-465101.

Research output: Contribution to journalArticle

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AU - Osipov, M.A.

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AB - The period of the layered structure in smectic A and smectic C liquid crystal phases has been calculated numerically by direct minimization of the mean-field free energy which takes into account the interaction between molecules in adjacent smectic layers. The smectic layer spacing is calculated for two systems characterized by conventional and anomalously weak layer contraction in the smectic C phase. It is then compared with the simple estimate based on the average projection of the molecular long axis on the smectic layer normal. For both systems, temperature variation of the average molecular projection is qualitatively similar to that of the calculated layer spacing although certain quantitative deviations exist.

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KW - liquids and polymers

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KW - structural

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