In this paper we analyse the macroscopic orientation induced on a nematic liquid crystal by a periodic saw-toothed surface in the micrometric range and with variable slope. We calculate the critical slope, which corresponds to the planar-homeotropic transition, for different values of the elastic anisotropy and with boundary conditions varying from relatively weak anchoring [W = 10(-4) erg/cm(2)] to relatively strong anchoring [W = 10(-1) erg/cm(2)] conditions. The present study is carried out by means of a finite element method approach.
Influence of surface geometry on nematic orientation: A numerical approach
BARBERI, Riccardo Cristoforo
1997-01-01
Abstract
In this paper we analyse the macroscopic orientation induced on a nematic liquid crystal by a periodic saw-toothed surface in the micrometric range and with variable slope. We calculate the critical slope, which corresponds to the planar-homeotropic transition, for different values of the elastic anisotropy and with boundary conditions varying from relatively weak anchoring [W = 10(-4) erg/cm(2)] to relatively strong anchoring [W = 10(-1) erg/cm(2)] conditions. The present study is carried out by means of a finite element method approach.File in questo prodotto:
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