Non-Singular Walls in Cano-Grandjean Wedge

Director Distribution in Cano-Grandjean Wedge Influenced by Surface Anchoring

“…Nevertheless, the observation of walls beginning from the first Cano-Grandjean zone (compare the Figs 1, 2 and 7) may be regarded as an indication that the actual surface anchoring potential differs from the R-P-potential. However there are options to improve the experimental resolution sufficiently for accurate studying the director orientation distribution at the wedge surface for an individual Cano-Grandjean zone whereas its resolution will remain to be insufficient for studying the director variations inside walls dividing individual Cano-Grandjean zones (the attempt to do this was reported in [9]). In whole, the obtained results demonstrates that in the presented approach some improvement in accuracy of the measurements will be sufficient to reconstruct actual surface anchoring potential and distinguish what kind of model anchoring potential is closer to the actual potential.…”

“…Strong and weak anchoring at the wedge surfaces were obtained by the same way as in our previous paper [9] (rubbing and photoalignment). The easy axis direction was the same at the both surfaces being perpendicular to the plane of the shown experimental setup.…”

“…The reported recently [8] results on observation of very low surface anchoring strength open new options for restoring actual surface anchoring potential [7,9]. The presented below studies at CanoGrandjean Wedge are targeting at restoration of the actual surface anchoring potential and comparison of the obtained results with those following from the widely used model surface 32 V. A.…”