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Proceedings Paper

Nematics under external fields: static stability analysis
Author(s): J. P. Casquilho
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Paper Abstract

The stability of the nematic director field under applied magnetic fields is studied using continuum theory. The stability analysis of two order parameter potentials allows the study of the influence of the external field on the development of static periodic distortions in the director field. The case of oblique applied fields is studied. In the frame of a phase transition analogy, where the angle of the field with respect to the unperturbed director plays the role of the external parameter, phase diagrams are shown for the critical angle for the director transition from the homogeneous to the distorted state, as a function of the Frank elastic anisotropy.

Paper Details

Date Published: 1 February 1998
PDF: 5 pages
Proc. SPIE 3318, Liquid Crystals: Physics, Technology, and Applications, (1 February 1998); doi: 10.1117/12.299994
Show Author Affiliations
J. P. Casquilho, Univ. Nova de Lisboa (Portugal)


Published in SPIE Proceedings Vol. 3318:
Liquid Crystals: Physics, Technology, and Applications

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