Effect of Dichroic dye on dielectric properties of ferroelectric liquid crystals: A comparative study

In order to study the effect of mixing dye molecules in ferroelectric liquid crystals, we have investigated two ferroelectric liquid crystal samples CS1016 and Felix 17/000 along with their mixture with Anthraquinone dye. The measurements have been made in the frequency range 100 Hz-10 MHz, with the variation of temperature from 30 to 90 °C. The dielectric behaviour of dye mixed CS1016 is quite different from that of Felix 17/000. This different behaviour has been explained by determining other parameters like distribution parameter, dielectric strength and relaxation frequency, etc. The different nature shown by two different samples has also been explained by electro-optical measurements.