Investigation of the Kerr effect and third-order susceptibility constants in a nematic liquid crystal

In this paper, the static Kerr effectwas investigated for the W-1680 at temperatures above the nematic–isotropic transition temperature and compared with 9CHBT. We experimentally measured the electro-optical Kerr constant and the pre-transitional behavior. The Kerr lawhas been confirmed and the variation of the inverse Kerr constant, with a temperature above the smectic–isotropic transition temperatures, were determined. The linear dependence of (T−T*)−1 on the Kerr constant is found to be in good agreement with the predications of the Landau–De Gennes model. Additionally, the temperature dependence of third order susceptibility has been studied. This value for these samples will reduce when the temperature increases. ©

Nematic liquid crystal Kerr constant Temperature dependence Third order susceptibility Electro-optical effec