Publication Title

Physical Review Letters

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

Physics

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.


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