PB06 FT-IR study on molecular orientation of the disclinations generated in the nematic cell

Abstract

The molecular orientation of disclinations in nematic liquid crystal has been investigated by microscopic polarized infrared spectroscopy. The in-plane orientation and order parameter for each region has been determined by the comparison of band intensity for parallel and perpendicular vibration modes with respect to the molecular axis. This analysis leads us to discriminate and classify the disclination that it has been characterized to the wedge disclination of strength -2π and +2π. The vertical molecular orientation will also be discussed.