Interactions and Transport of Charged Species in Bulk and at Interfaces
Effects of Polarity in Liquid CrystalsAlexey Eremin
Department of Nonlinear phenomena, University of Magdeburg, Germany, Germany
Polar effects in liquid crystals (LCs) play a pivotal role in stability of mesophase structures, structure formation and technological applications of liquid crystals. In the recent years, various types of LC materials were found to exhibit a residual polarisation, which, coupled to the chiral symmetry of the phases, results in a variety of mesoscopic structures [1, 2]. Those include, for example, helical nanofilament, dark conglomerate and polarisation-modulated phases. Polarity is also coupled to the deformation of the molecular order and opens perspectives for designing of flexoelectric switchers and sensors. In this presentation we discuss mechanisms of development of the polar in novel LC materials as well as on electro-optical and nonlinear-optical properties of liquid crystals.
 A. Eremin, U. Kornek, S. Stern, R. Stannarius, F. Araoka, H. Takezoe, H. Nadasi, W. Weissflog, and A. Jákli, Pattern-Stabilized Decorated Polar Liquid-Crystal Fibers, Phys. Rev. Lett., vol. 109, no. 1, p. 017801, Jul. 2012.
 A. Eremin and A. Jákli, Polar bent-shape liquid crystals from molecular bend to layer splay and chirality, Soft Matter, vol. 9, no. 3, pp. 615637, 2012.