TY - JOUR
T1 - Effect of material properties on reverse flow in nematic liquid crystal devices with homeotropic alignment
AU - Vanbrabant, Pieter J.M.
AU - Beeckman, Jeroen
AU - Neyts, Kristiaan
AU - James, Richard
AU - Fernandez, F. Anibal
PY - 2009
Y1 - 2009
N2 - Reverse flow is undesirable in liquid crystal devices with vertical alignment. The influence of the material properties on the onset of backflow is investigated for commercially available negative dielectric liquid crystals. It is shown that the threshold voltage VBF for the occurrence of backflow is an important material characteristic. This threshold is relevant for applications and a large value is desired in devices to avoid backflow while keeping a wide applicable voltage range. Accurate finite element simulation of the liquid crystal hydrodynamics allows extraction of VBF and the unknown Miesowicz coefficients i j. The resulting values are tabulated at 20.0 °C.
AB - Reverse flow is undesirable in liquid crystal devices with vertical alignment. The influence of the material properties on the onset of backflow is investigated for commercially available negative dielectric liquid crystals. It is shown that the threshold voltage VBF for the occurrence of backflow is an important material characteristic. This threshold is relevant for applications and a large value is desired in devices to avoid backflow while keeping a wide applicable voltage range. Accurate finite element simulation of the liquid crystal hydrodynamics allows extraction of VBF and the unknown Miesowicz coefficients i j. The resulting values are tabulated at 20.0 °C.
UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000270915700008
UR - https://openalex.org/W2019564638
UR - https://www.scopus.com/pages/publications/70350044704
U2 - 10.1063/1.3242018
DO - 10.1063/1.3242018
M3 - Journal Article
SN - 0003-6951
VL - 95
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 15
M1 - 151108
ER -