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Switching of ferroelectric liquid crystal doped with cetyltrimethylammonium bromide-assisted CdS nanostructures

机译：十六烷基三甲基溴化铵辅助的CdS纳米结构掺杂的铁电液晶的转换

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摘要

Large scale high yield cadmium sulfide (CdS) nanowires with uniform diameter were synthesized using a rapid and simple solvo-chemical and hydrothermal route assisted by the surfactant cetyltrimethylammonium bromide (CTAB). Unique CdS nanowires of different morphologies could be selectively produced by only varying the concentration of CTAB in the reaction system with cadmium acetate, sulfur powder and ethylenediamine. We obtained CdS nanowires with diameters of 64-65 nm and lengths of up to several micrometers. A comparative study of the optical properties of ferroelectric liquid crystal (FLC) Felix-017/100 doped with 1% of CdS nanowires was performed. Response times of the order of from 160 to 180 μs, rotational viscosities of the order of from 5000 to 3000 mN s m~(-2) and polarizations of the order of from 10 to 70 nC cm~(-2) were measured. We also observed an anti-ferroelectric to ferroelectric transition for CdS doped FLC instead of the ferroelectric to paraelectric transition for pure FLC.
机译：借助表面活性剂十六烷基三甲基溴化铵（CTAB）辅助的快速简单的溶剂化学和水热途径​​，合成了直径均匀的大规模高产量硫化镉（CdS）纳米线。通过仅改变与乙酸镉，硫粉和乙二胺的反应体系中CTAB的浓度，可以选择性地产生不同形态的独特的CdS纳米线。我们获得了直径为64-65 nm，长度可达几微米的CdS纳米线。对掺有1％CdS纳米线的铁电液晶（Felix-017 / 100）的光学性能进行了比较研究。测量的响应时间为160到180μs数量级，旋转粘度为5000到3000 mN s m〜（-2）数量级，极化的数量级为10到70 nC cm〜（-2）。我们还观察到CdS掺杂FLC的反铁电至铁电转变，而不是纯FLC的铁电至顺电转变。

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