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Article
Biaxial Nematic Phase in Bent-Core Thermotropic Mesogens
Physical Review Letters
  • Bharat R Acharya, Kent State University - Kent Campus
  • Andrew Primak, Kent State University - Kent Campus
  • Satyendra Kumar, Kent State University - Kent Campus
Publication Date
4-9-2004
Document Type
Article
DOI
10.1103/PhysRevLett.92.145506
Keywords
  • Liquid Crystal Phases,
  • Achiral Molecules,
  • Shaped Molecules,
  • Polarization,
  • Transitions,
  • Mixtures,
  • Fluid,
  • Order,
  • Field
Disciplines
Abstract

A biaxial nematic phase had been predicted with D2h symmetry, wherein the mesogen’s long and short transverse axes are simultaneously aligned along the two orthogonal, primary and secondary directors, n and m, respectively. The unique low-angle x-ray diffraction patterns in the nematic phases exhibited by three rigid bent-core mesogens clearly reveal their biaxiality. The results of x-ray diffraction can be readily reproduced by ab initio calculations that explicitly include the bent-core shape in the form factor and assume short-range positional correlations.

Comments

Copyright 2004 American Physical Society. Available on publisher's site at http://dx.doi.org/10.1103/PhysRevLett.92.145506.

Citation Information
Bharat R Acharya, Andrew Primak and Satyendra Kumar. "Biaxial Nematic Phase in Bent-Core Thermotropic Mesogens" Physical Review Letters Vol. 92 Iss. 14 (2004)
Available at: http://works.bepress.com/satyendra_kumar/4/