Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

Microscopic origin of ferroelectricity in chiral smectic c* liquid crystals and ordering of 'ferroelectric fishes' proposed by de gennes

Osipov, M.A. and Gorkunov, M.V. (2009) Microscopic origin of ferroelectricity in chiral smectic c* liquid crystals and ordering of 'ferroelectric fishes' proposed by de gennes. Liquid Crystals, 36 (10-11). pp. 1281-1288. ISSN 0267-8292

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

The qualitative microscopic mechanism of ferroelectric ordering in smectic C* liquid crystals originally proposed by de Gennes and others is analysed in detail using the molecular-statistical approach. The general expression is obtained for the spontaneous polarisation of the smectic C* phase composed of chiral and polar molecules of the C2 symmetry. The polarisation is shown to be determined by molecular chirality, molecular transverse dipole and the non-polar biaxial order parameter which does not vanish in the non-chiral smectic C phase. A particular molecular model is considered in which molecular chirality and molecular biaxiality are determined by the pair of off-centre transverse molecular dipoles. In the context of this model the spontaneous polarisation is evaluated both analytically and numerically.