Open AccessAbout orientational instability in nematic liquid crystal films
Author(s) -
A. G. Kalugin,
Д. В. Павлов
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1392/1/012009
Subject(s) - liquid crystal , constant (computer programming) , condensed matter physics , instability , biaxial nematic , planar , materials science , work (physics) , optics , physics , thermodynamics , mechanics , computer graphics (images) , computer science , programming language
In the presented work the role of the surfacelike (splay-bend) elastic constant in the Frank’s energy of nematic liquid crystals for orientational instability in the thin nematic films is considered. It is shown that nontrivial periodical perturbations exist in the nematic film with undisturbed planar director orientation in case of sufficiently large value of splay-bend constant. For these solutions the relations between splay-bend constant, another Frank’s constants and layer thickness are received and studied. These correlations allow us to make new explanation for certain experimental effects and to present method for surfacelike constant value measurement.