Computer Simulations using Biaxial Ellipsoid Model for Binary Mixtures

Abstract

An orientaional order of non-mesogenic molecules in a nematic phase has been investigated using Monte Carlo simulations. 4-Hexyloxy-4'-cyanobiphenyl (6OCB) and non-mesogenic molecules, pyrene, naphthalene and p-difluorobenzene, were approximated to soft ellipsoids with three semi-axes. Two tensor order parameters were evaluated to specify the orientational order of each component. The effect of molecular size on the orientational order was discussed.