EFFECT OF THE QUADRUPOLAR INTERACTIONS ON DIELECTRIC RESPONSE OF CHIRAL SMECTIC LIQUID CRYSTALS

摘要：

A discrete model is used to study the dielectric response of chiral smectic liquid crystals under the influence of external harmonic electric field. In this model, the order parameter is the tilt parameter (ζ)_j which describes the magnitude and direction of the director (n) in layer- j, where n inclines at an angle to the smectic layer normal. The effect of quadrupolar interactions on dielectric loss of chiral smectic liquid crystal phases is calculated numerically. Analytical expressions for the dielectric loss in terms of eigen-frequencies of the phase and amplitude modes can be derived from the free energy expansion. Numerical results of frequency dependence of dielectric loss are also obtained.

作者: T.Y. Tan L.H. Ong M.(C)epi(c)

作者单位: School of Physics,Universiti Sains Malaysia,11800 USM,Penang,Malaysia. Jo(z)ef Stefan Institute,Jamova 39,1000 Ljubljana,Slovenia Faculty of Education,University of Ljublj

会议类型: 国际会议

会议名称: 2009 The 18th IEEE International Symposium on Applications of Ferroelectrics(2009年国际铁电学暨IEEE国际铁电应用联合会议)

会议地点: 西安

会议语种:英文

页码: 63-66

在线出版日期: 2009-08-23（万方平台首次上网日期，不代表论文的发表时间）