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Influence of carbon nanotubes on the dielectric and electro-optical properties of a proto-type ferroelectric mixture used in display devices
Journal of Molecular Liquids ( IF 5.3 ) Pub Date : 2021-09-23 , DOI: 10.1016/j.molliq.2021.117653
Asim Debnath 1 , Pradip Kumar Mandal 1
Affiliation  

Doping of different concentrations of single and multi-walled carbon nanotubes (CNTs) is found to influence considerably the dielectric and electro-optical properties of a room temperature FLC mixture. However, the comparative change of such properties between the two types of CNT doped systems is marginal. Dispersion of CNTs produces not enough change in the molecular ordering as revealed by the small decrease in the phase transition temperatures and tilt angles. Spontaneous polarization is also found to decrease due to the screening of the molecular dipole moments by the π–π electron system of the CNTs. Both the dielectric increments and absorption strengths are found to decrease remarkably due to the trapping of ions by the CNTs. Trapping also decreases ac and dc conductivities and the local electric field which in turn fastens the switching time considerably making the CNT-doped systems more suitable for FLC-based applications.



中文翻译:

碳纳米管对用于显示设备的原型铁电混合物的介电和电光特性的影响

发现掺杂不同浓度的单壁和多壁碳纳米管 (CNT) 会显着影响室温 FLC 混合物的介电和电光特性。然而,两种类型的 CNT 掺杂系统之间这种性质的比较变化是微不足道的。正如相变温度和倾角的小幅下降所揭示的那样,碳纳米管的分散不会产生足够的分子排序变化。由于 CNT 的 π-π 电子系统对分子偶极矩的屏蔽,还发现自发极化降低。由于碳纳米管对离子的俘获,发现介电增量和吸收强度都显着降低。

更新日期:2021-09-30
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