![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
In the present paper we have investigated the elastic moduli ratio and the rotational viscosity coefficient of liquid crystalline derivatives different chemical classes: biphenyls, phenylcyclohexanes, phenylpyrimidines, phenylbicyclooctanes etc., which are broadly used in electrooptical devices. We also have considered the mixtures of these substance with the liquid crystalline matrix of azoxycompounds, having the value of the dielectric anisotropy close to zero (Δϵ = ϵ‖ − ϵ┴ ≲ 0).
The experimental data, obtained on the rotational viscosity coefficient γ1 and the ratio of the elastic moduli K 33 /K 11, testify to the influence of the molecular structure on the considered properties, having a very complicated character especially for the mixtures of nematic liquid crystals of different chemical classes.
