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Microscopic Aspects of the Smectic Phases

  • W. H. de Jeu
Part of the NATO ASI Series book series (NSSB, volume 290)

Abstract

First the empirical information on the molecular factors that influence smectic behaviours will be summarized. The various types of molecular model and commonly accepted concept that are supposed to lead to smectic layering will be evaluated. Introduction of a coupling between the smectic order parameter and any other relevant order parameter can drive the nematic-smectic A phase transition from second order to first order. Next the breaking of up-down symmetry will be considered, which can have either a steric or a polar origin. The presence of strong terminal permanent dipoles leads to various types of smectic A phase. The role of dipolar interactions will be discussed in some detail, including its importance for the occurrence of reentrant nematic behaviour. However, the latter effect is not restricted to strongly polar systems. Finally the origin of tilted smectic phases will be discussed.

Keywords

Dipole Moment Dielectric Permittivity Nematic Phase Orientational Order Tricritical Point 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • W. H. de Jeu
    • 1
    • 2
  1. 1.FOM-Institute for Atomic and Molecular PhysicsAmsterdamThe Netherlands
  2. 2.Open UniversityHeerlenThe Netherlands

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