ABSTRACT The dipolar and surface plasmon properties of metallic nanoparticles, especially gold and silver NPs made them suitable candidates for doping with LC system, which provides faster switching time, low power consumption in the display devices. The doping of NPs in the LC system influences the physical properties such as dielectric anisotropy, optical anisotropy, elastic constants, viscosity, and conductivity. In this work, we report the effect of doping of hexane thiol functionalized silver nanoparticles (f-AgNps) of average diameter 3-5nm on the electro-optical switching properties of nematic LC 4-trans-pentyl-cyclohexyl cyanobenzene (5PCH) in the twisted nematic geometry. The threshold as well as switching voltages have also reducedin the nanocomposites of 5PCH compared to pure 5PCH. The steepness of the V-T graph necessary for better multiplexing performance and high contrast has increased by 230% in the 0.025 wt% of f-AgNPs doped 5PCH compared to pure 5PCH. The ion current for 0.025 wt% f-AgNPs doped nanocomposites of 5PCH has reduced by 60% compared to pure 5PCH. We have observed faster switching time in f-AgNPs nanocomposites compared to pure 5PCH due to the decrease of visco-elastic ratio. The total response time of 0.05 wt% f-AgNPs nanocomposites is reduced by 19% compared to pure 5PCH. Graphical abstract

中文翻译：

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掺杂有扭曲向列配置的功能化银纳米粒子的向列液晶的电光响应增强

摘要 金属纳米粒子，尤其是金和银 NPs 的偶极和表面等离子体特性使它们成为掺杂 LC 系统的合适候选者，LC 系统可提供更快的切换时间和低功耗的显示设备。液晶系统中纳米颗粒的掺杂会影响物理性质，如介电各向异性、光学各向异性、弹性常数、粘度和电导率。在这项工作中，我们报告了平均直径为 3-5nm 的己硫醇官能化银纳米粒子 (f-AgNps) 的掺杂对向列型 LC 4-反式-戊基-环己基氰基苯 (5PCH) 在扭曲向列几何。与纯 5PCH 相比，5PCH 纳米复合材料的阈值和开关电压也有所降低。与纯 5PCH 相比，在 0.025 wt% 的 f-AgNPs 掺杂的 5PCH 中，获得更好的复用性能和高对比度所需的 VT 图的陡度增加了 230%。与纯 5PCH 相比，0.025 wt% f-AgNPs 掺杂的 5PCH 纳米复合材料的离子电流降低了 60%。由于粘弹性比的降低，我们观察到与纯 5PCH 相比，f-AgNPs 纳米复合材料的转换时间更快。与纯 5PCH 相比，0.05 wt% f-AgNPs 纳米复合材料的总响应时间减少了 19%。图形概要 由于粘弹性比的降低，我们观察到与纯 5PCH 相比，f-AgNPs 纳米复合材料的转换时间更快。与纯 5PCH 相比，0.05 wt% f-AgNPs 纳米复合材料的总响应时间减少了 19%。图形概要 由于粘弹性比的降低，我们观察到与纯 5PCH 相比，f-AgNPs 纳米复合材料的转换时间更快。与纯 5PCH 相比，0.05 wt% f-AgNPs 纳米复合材料的总响应时间减少了 19%。图形概要