Recently nanoparticles (NPs) are extensively explored as the dopant in liquid crystal (LC) materials because of their phenomenal properties such as good guest–host interaction and high surface to volume ratio. Keeping this motivation into mind, we have observed the influence of newly synthesized cobalt oxide (CoO) NPs on the dielectric and optical properties of nematic LC (NLC) namely 5 CB. For the observation of dielectric properties, we have performed dielectric spectroscopic measurements in the frequency range from 20 Hz to 1 MHz. The sample cell thickness-dependent studies have been performed to perceive the effect of applied field strength on dielectric parameters in presence of CoO NPs. Along with it, we have observed the alignment of the mesogens through the optical microscopy. So doping of such NPs serves various potential applications in the field of research as well as being proven to be cost-effective for industrial applications.

In this article, we report the variation in dielectric properties of nematic liquid crystal (NLC) namely 5CB by the means of cobalt oxide nanoparticles (CoO NPs) doping. These CoO NPs may work as the ion absorbing agent in the NLC medium and can easily modify dielectric properties without influencing molecular alignment. Along with this, we have performed the LC sample cell thickness dependent studies of pure and CoO NPs doped 5 CB.

最近，纳米粒子 (NPs) 作为液晶 (LC) 材料中的掺杂剂被广泛探索，因为它们具有出色的特性，例如良好的客体相互作用和高表面体积比。牢记这一动机，我们观察到新合成的氧化钴 (CoO) NPs 对向列型 LC (NLC) 即 5 CB 的介电和光学特性的影响。为了观察介电特性，我们在 20 Hz 到 1 MHz 的频率范围内进行了介电光谱测量。已经进行了与样品池厚度相关的研究，以了解在 CoO NP 存在下施加的场强对介电参数的影响。与此同时，我们还通过光学显微镜观察了介晶的排列。

在本文中，我们报告了通过氧化钴纳米粒子 (CoO NPs) 掺杂的向列液晶 (NLC) 即 5CB 介电特性的变化。这些 CoO NPs 可以作为 NLC 介质中的离子吸收剂，并且可以在不影响分子排列的情况下轻松改变介电特性。与此同时，我们还对纯和 CoO NPs 掺杂的 5 CB 进行了 LC 样品池厚度相关研究。