旋转粘度
液晶
材料科学
悬挂(拓扑)
粘度
纳米颗粒
胶体
铁电性
兴奋剂
粒子(生态学)
工作(物理)
化学物理
化学工程
纳米技术
复合材料
热力学
电介质
光电子学
化学
海洋学
物理
同伦
地质学
工程类
数学
纯数学
作者
Nicolas Brouckaert,Nina Podoliak,Tetiana Orlova,Denitsa Bankova,Angela F. De Fazio,Antonios G. Kanaras,Ondrej Hovorka,Giampaolo D'Alessandro,Malgosia Kaczmarek
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-01-21
卷期号:12 (3): 341-341
被引量:1
摘要
Doping liquid crystals with nanoparticles is a widely accepted method to enhance liquid crystal's intrinsic properties. In this study, a quick and reliable method to characterise such colloidal suspensions using an optical multi-parameter analyser, a cross-polarised intensity measurement-based device, is presented. Suspensions characterised in this work are either plasmonic (azo-thiol gold AzoGNPs) or ferroelectric Sn2P2S6 (SPS) nanoparticles in nematic liquid crystals. The elastic constants and rotational viscosity showed nonlinear dependence on the concentration of AzoGNPs, initially increasing at lower concentrations and then decreasing at higher concentrations, indicating some degree of particle aggregation. For the SPS suspension, the elastic constant decreased with doping, while the rotational viscosity increased, in agreement with previous findings. Through viscosity measurements, the stability of SPS suspension over ten years is also highlighted.
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