Abstract The effect of single-walled carbon nanotubes (SWCNTs) on the dielectric, conductivity, and electro-optic properties of nematic liquid crystal 4-cyano-4'-pentylbiphenyl (5CB) has been studied. It was shown that the additive of SWCNTs with concentration of 0.5% leads to an increase in the order parameter of 5CB. In this case, the clearing point is raised, the longitudinal component of the dielectric permittivity increases while the transverse component decreases. The incipient percolation effect promotes to the dominance of hopping electron conductivity over ionic conductivity, leading to an increase in specific conductivity. The elastic splay constant of 5CB is enhanced and, accordingly, the threshold voltage of the Freedericksz effect increases in this situation. An increase in distance between LC molecules leads to decreasing of viscosity. As a result, the flip-flop motion of molecules become easier and the switching times are also reduced.

中文翻译：

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SWCNT掺杂液晶5CB的介电弛豫、电导率和电光特性

摘要 研究了单壁碳纳米管 (SWCNT) 对向列液晶 4-氰基-4'-戊基联苯 (5CB) 介电、导电和电光性能的影响。结果表明，添加浓度为 0.5% 的 SWCNTs 会导致 5CB 的有序参数增加。在这种情况下，清除点升高，介电常数的纵向分量增加而横向分量减小。初始渗流效应促进了跳跃电子电导率超过离子电导率的优势，导致比电导率的增加。5CB 的弹性张开常数增强，因此在这种情况下 Freedericksz 效应的阈值电压增加。LC 分子之间距离的增加导致粘度降低。结果，分子的触发器运动变得更容易，并且切换时间也减少了。