Lattice Model of Mixed Liquid Crystal-Molecules Having Non-Symmetric Flexible Tails

A lattice model of liquid crystal molecules with rigid cores and non-symmetric flexible tails is introduced to study the mixed systems. The new definition of order parameter which not only consider the direction of cores but also the direction of tails improve the calculated results. The N-I phase transition temperature and other thermodynamic quantities of many two components mixed system are calculated and compared with experimental data.