Zinc Oleate Nanorod-Induced Vertical Alignment of Nematic Liquid Crystal

被引:4
|
作者
Mishra, Shweta [1 ]
Manjuladevi, V [1 ]
Gupta, Raj Kumar [1 ]
机构
[1] Birla Inst Technol & Sci BITS Pilani, Dept Phys, Pilani 333031, India
来源
ACS OMEGA | 2022年 / 7卷 / 50期
关键词
ORIENTATION; SURFACE; MOLECULES; TRANSITIONS; MONOLAYERS; CELL;
D O I
10.1021/acsomega.2c05196
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Nanocomposite zinc oxide nanorods capped with oleic acid (ZOR) with positive dielectric anisotropy liquid crystal (LC) 4 '-octyl-4-biphenylcarbonitrile (8CB) filled in unaligned cells exhibit homeotropic alignment of host LC molecules. Further, systematic investigation of the textural, dielectric, and conductivity properties of nanocomposites filled in planar cells is performed with increasing concentration of nanorods. At a nanorod concentration <= 0.2 wt % in 8CB, the order parameter of nanocomposite samples is found to be increasing and ionic conductivity is found to be decreasing as compared to pure LC. Beyond 0.3 wt % concentration of nanorods in 8CB, vertical alignment (VA) of host LC is observed even in a planar aligned cell. The VA of LC molecules in ZOR nanocomposites is confirmed through attenuated total reflection-Fourier transform infrared absorption spectra studies.
引用
收藏
页码:46466 / 46474
页数:9
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