Dielectric and Electrical Investigations in Pure and Dyed Short Pitch High Spontaneous Polarization Liquid Crystals

摘要

The dielectric and electrical properties of a short pitch and high spontaneous polarization ferroelectric liquid crystal mixture and its guest-host derivatives with different wt/wt ratio of anthraquinone blue dichroic dye are studied The increase in dye concentration results in the decrease of the permittivity as well as polarization of the material in the SmC~* phase. However, an opposite effect is observed in permittivity, in the SmA~* phase, and in polarization near the T_C. The response time of pure material is found to be less than the dyed samples with no appreciable change in viscosity.