Helix unwinding in ferroelectric liquid crystals induced by tilted electric field

作     者：Nail G.Migranov Aleksey A.Kudreyko 

作者机构：Bashkir State Pedagogical UniversityDepartment of General and Theoretical Physics Ufa State Petroleum Technological UniversityDepartment of Physics 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第7期

页      面：341-344页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Project supported by the Russian Foundation for Basic Research(RFBR)(Grant No.14-02-97026) 

主　　题：ferroelectric liquid crystals helicoidal structure thin films Euler's equation 

摘      要：Helix unwinding in ferroelectric liquid crystals induced by an electric field is theoretically studied on the basis of the continuum theory. By applying a weak electric field tilted to the smectic layers, the contribution of the dielectric interaction energy density to the total free energy density is increased. Approximation methods are used to calculate the free energy for different tilt angles between the electric field and the smectic layers. The obtained results suggest selecting the optimal number of pitches in the film that matches to the minimum of the free energy.