Helix unwinding in ferroelectric liquid crystals induced by tilted electric field

doi:10.1088/1674-1056/24/7/076101

Abstract

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.

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

Received: 21 January 2015
Revised: 01 April 2015
Accepted manuscript online:

PACS:	61.20.Gy	(Theory and models of liquid structure)
	61.20.Ja	(Computer simulation of liquid structure)
	61.30.Dk	(Continuum models and theories of liquid crystal structure)
	61.30.Gd	(Orientational order of liquid crystals; electric and magnetic field effects on order)

Fund:

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

Corresponding Authors: Aleksey A. Kudreyko
E-mail: akudreyko@rusoil.net

Cite this article:

Nail G. Migranov, Aleksey A. Kudreyko Helix unwinding in ferroelectric liquid crystals induced by tilted electric field 2015 Chin. Phys. B 24 076101

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