Physical Review E
The effect of director pretilt on the twist magnetic Freedericksz transition of nematics was investigated in a planar cell. The director configuration was calculated as a function of magnetic inductance. The dielectric and optical response of the nematic liquid crystal was numerically modeled. A dielectric measurement method for determining the elastic constant K-22 is presented. The influence of the conditions for the Mauguin effect is discussed. The theoretical predictions were confirmed by our experiments. Experimental data for all elastic constants of a bent-core nematic material are presented and discussed.
Salamon, Peter; Éber, Nandor; Seltmann, J.; Lehmann, M.; Gleeson, Jim T.; Sprunt, Samuel N.; and Jákli, Antal (2012). Dielectric Technique to Measure the Twist Elastic Constant of Liquid Crystals: The Case of a Bent-Core Material. Physical Review E 85(6). Retrieved from http://digitalcommons.kent.edu/cpippubs/67