Effects of ferroelectric nanoparticles on ion transport in a liquid crystal

Abstract

A small quantity of BaTiO3 ferroelectric nanoparticles (FNPs) of 50 nm diameter was doped in a nematic liquid crystal (LC), and the free ion concentration was found to be significantly reduced in the LC + FNP hybrid compared to that of the pure LC. The strong electric fields, due to the permanent dipole moment of the FNPs, trapped some mobile ions, reducing the free ion concentration in the LC media. The reduction of free ions was found to have coherent impacts on the LC's conductivity, rotational viscosity, and electric field-induced nematic switching.

Influence of superionic nanoparticles Cu6PS5I on dielectric properties of nematic liquid crystal 6СНВТ

“…The analysis of publications shows that a lot of studies with using different types of nanoparticles are already performed. The most promising direction to modify functionalities of LC is ferroelectric nanoparticles [1][2][3][4][5][6][7]. One of the features of these nanoparticles is the presence of a strong local electric field.…”

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

“…%) did not lead to the corresponding decrease of the ion concentration because of the aggregation of nanoparticles. However, at this level of nanoparticle loading, the concentration of ions was still ~1.3 times smaller than that of the pure (non-doped) 5CB [199]. The measured values of the electrical conductivity (at a temperature of 25 °C) were m S / 10 95 .…”

“…%) [197]. Effect of 3 BaTiO ferroelectric nanoparticles on the ion transport in the nematic liquid crystal 5CB was reported in [199]. By introducing relatively low quantities of 3 BaTiO nanoparticles, the concentration of mobile ions in 5CB was reduced by a factor of ~1.5 (at a concentration of 0.115 wt.…”

“…This equation, for the barium titanate ( The ion trapping by means of various ferroelectric nanoparticles embedded in liquid crystals was explored in papers [197][198][199][200] summarized in Table 6. LiNbO nanoparticles (0.01-0.1 wt.…”

Effect of magnetic nanoparticles on the nematic-smectic-A phase transition

“…carbon nanotubes, silica microbeads, nanoparticles and various collides exhibit remarkable new physical phenomena. Experiments have shown that nanoparticles and ferroelectric nanoparticles can greatly enhance the physical properties of nematic and smectic liquid crystals [1][2][3][4][5][6][7][8][9][10][11].…”