Abstract
We report an unusual temperature dependence of the elastic constants of a rodlike nematic liquid crystal (RLC) mixed with a highly kinked bent-core liquid crystal (BLC). On cooling through the nematic phase, the splay elastic constant (K(11)) of the RLC-BLC mixture increased below the nematic-isotropic phase transition temperature, but started to decrease midway through the nematic phase. The decrease of K(11) was more prominent with a greater concentration of BLC. On the other hand, the bend elastic constant (K(33)) of the RLC-BLC mixture monotonically increased through the nematic phase with decreasing temperature.
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