Abstract
We have investigated the impact of titanium dioxide nanoparticles on the ionic contamination of liquid crystals. Nematic liquid crystals with high and low initial ionic contamination have been examined. It has been shown that titanium dioxide nanoparticles reduced the ion density of liquid crystals with high initial ionic contamination from 134.5 × 1012 cm−3 to 63.2 × 1012 cm−3. In the case of liquid crystals with low initial ionic contamination, the nanoparticles led to an insignificant increase of ion density from 19.8 × 1012 cm−3 to 25.7 × 1012 cm−3.
Highlights
Despite the negative effect of ionic contamination in display techniques, liquid crystals (LCs) with high ionic conductivity may be used in non-display applications [18,19]
We have examined nematic liquid crystals with low (LC1) and high (LC2) ionic contamination and their composites with TiO2 nanoparticles
The initial data show that increasing the TiO2 NP concentration up to 1 wt % leads to the rise of the ion density to 30% in the case of initially low-contaminated LC1
Summary
Extensive experimental research has shown that nanoparticles (NPs) affect the ionic conductivity of LCs. data obtained from different experimental studies are contradictory. We have examined nematic liquid crystals with low (LC1) and high (LC2) ionic contamination and their composites with TiO2 nanoparticles.
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