Helix unwinding in ferroelectric liquid crystals induced by tilted electric field  

作　　者：Nail G.Migranov Aleksey A.Kudreyko 

机构地区：[1]Bashkir State Pedagogical University,Department of General and Theoretical Physics [2]Ufa State Petroleum Technological University,Department of Physics

出　　处：《Chinese Physics B》2015年第7期341-344,共4页中国物理B（英文版）

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

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.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.

关 键 词：ferroelectric liquid crystals helicoidal structure thin films Euler＇s equation 

分 类 号：O753.2[理学—晶体学]