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Phases and Phase Transitions in Nematic Lyotropics

  • R. Bartolino
  • G. Chidichimo
  • A. Golemme
  • F. P. Nicoletta
Part of the NATO ASI Series book series (NSSB, volume 290)

Abstract

Mixtures of amphiphilic molecules and water may form nematic lyotropic liquid crystals characterized by aggregates of amphiphiles with finite shape and long range orientational order. The Liquid Crystal International Community refers to them as positive uniaxial, biaxial and negative uniaxial nematics1,2,3. Such systems occur in a concentration range between the diluted isotropic micellar phase, characterized by small spherical aggregates, and the more packed hexagonal, or lamellar, phases, in which the aggregates are infinite cylinders with bidimensional hexagonal symmetry or infinite lamellae in a unidimensional lattice respectively4.

Keywords

Asymmetry Parameter Nematic Phase Small Angle Neutron Scattering Neutron Diffraction Pattern Electrical Field Gradient Tensor 
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

  • R. Bartolino
    • 1
  • G. Chidichimo
    • 2
  • A. Golemme
    • 2
  • F. P. Nicoletta
    • 1
  1. 1.Dipartimento di Fisica, GNSM and INFM Unità di CosenzaUniversità delia CalabriaArcavacata di Rende (Cosenza)Italy
  2. 2.Dipartimento di ChimicaUniversità della CalabriaArcavacata di Rende (Cosenza)Italy

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