摘要
Monte Carlo simulations are performed to study the phase diagram of liquid crystals formed by bent-core molecules with a strong transverse dipole moment deviating from their angular bisector.The results show that the strong dipolar interaction,after suppressing uniaxial phases,encourages biaxiality,which leads to a Landau point or even to a Landau line in the phase diagram,inducing a more stable biaxial nematic phase.It is also found that a deviation of dipole moment from the angular bisector also suppresses uniaxiality in the small bend-angle regime.
作者
叶晓芳
MERLITZ Holger
吴晨旭
YE Xiao-Fang;MERLITZ Holger;WU Chen-Xu(Department of Physics and ITPA,Xiamen University,Xiamen 361005)
基金
Supported by the National Natural Science Foundation of China under Grant Nos 10974162 and 11074208.