Lee Ji-Hoon, Yoon Tae-Hoon, Choi E-Joon
Advanced Electronics and Information Research Center, Division of Electronic Engineering, Chonbuk National University, Jeonju, Jeonbuk 561-756, Korea.
Department of Electronics Engineering, Pusan National University, Busan 609-735, Korea.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 Dec;88(6):062511. doi: 10.1103/PhysRevE.88.062511. Epub 2013 Dec 23.
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.
我们报道了一种棒状向列型液晶（RLC）与高度扭结的弯曲核液晶（BLC）混合体系弹性常数不同寻常的温度依赖性。在冷却通过向列相时，RLC - BLC混合物的展曲弹性常数（K(11)）在向列 - 各向同性相变温度以下增加，但在向列相中途开始下降。BLC浓度越高，K(11)的下降越显著。另一方面，RLC - BLC混合物的弯曲弹性常数（K(33)）在向列相中随温度降低单调增加。
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