Please use this identifier to cite or link to this item:
Title: Magnetic and electric field induced periodic deformations in planar oriented nematics
Authors: Kini, U.D.
Issue Date: Jan-1998
Publisher: Taylor & Francis
Citation: Liquid Crystals, 1998, Vol.24, p177 - 199
Abstract: Using the continuum theory in the linear perturbation limit, the formation of static periodic distortions (PD) is studied in a planar nematic sample under the action of crossed electric (E) and magnetic (H) fields. In a nematic dielectric with positive dielectric and diamagnetic anisotropies ( epsilon A > 0, chi A > 0), the wave vector of H induced PD depends on the tilt of H in a plane normal to the initial director orientation n o when E is in the sample plane; change of magnetic tilt may cause discontinuous changes in the wave vector. Similar results are obtained when electrical conductivity is taken into account with hydrodynamic effects being assumed absent. Calculations are extended to a study of PD in nematics with high elastic anisotropy for different signs of epsilon A and chi A. When such materials have susceptibility anisotropies of opposite sign, change in magnetic tilt may cause 're-entrant' appearances of distortions. When anchoring is weak enough, the saddle-splay elastic constant K 24 can influence the domain of existence of PD. Possible effects of flexoelectricity as well as results for cylindrical geometry are qualitatively discussed.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (Online)
Alternative Location:
Copyright: 1998 Taylor & Francis
Appears in Collections:Research Papers (SCM)

Files in This Item:
File Description SizeFormat 
1998 LC24p177.pdf
  Restricted Access
Restricted Access582.91 kBAdobe PDFView/Open Request a copy

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.