Why organically functionalized nanoparticles increase the electrical conductivity of nematic liquid crystal dispersions

2017 ◽  
Vol 5 (34) ◽  
pp. 8802-8809 ◽  
Author(s):  
Martin Urbanski ◽  
Jan P. F. Lagerwall
Keyword(s):  
Electrical Conductivity ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Functionalized Nanoparticles ◽  
Ligand Shell ◽  
Ionic Impurities

We demonstrate that ionic impurities trapped in the dense ligand shell of functionalized nanoparticles significantly increase the conductivity in LC nanodispersions.

Ionic impurities in nematic liquid crystal displays

2001 ◽  
Vol 28 (12) ◽  
pp. 1779-1783 ◽  
Author(s):  
M. R. Costa ◽  
R. A. C. Altafim ◽  
A. P. Mammana
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Liquid Crystal Displays ◽  
Ionic Impurities

scholarly journals Saturation effect for dependence of the electrical conductivity of planar oriented nematic liquid crystal 6CB on the concentration of Cu7PS6 nanoparticles

2017 ◽  
Vol 20 (04) ◽  
pp. 437-441 ◽  
Author(s):  
O.V. Kovalchuk ◽  
◽  
I.P. Studenyak ◽  
V.Yu. Izai ◽  
S.O. Rybak ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Liquid Crystal ◽  
Dielectric Properties ◽  
Dielectric Permittivity ◽  
Nematic Liquid Crystal ◽  
Saturation Effect ◽  
Frequency Range ◽  
Average Size

The influence of Cu7PS6 nanoparticles with the average size 117 nm on the dielectric properties of planar oriented nematic liquid crystal 6CB has been investigated within the frequency range 101…106 Hz and at the temperature 293 K. It has been shown that when changing the concentration of nanoparticles within the range 0 to 1 wt.%, the conductivity of the liquid crystal changes stronger than its dielectric permittivity. It has been shown that the electrical conductivity increases monotonously with increasing the concentration of nanoparticles. However, for this dependence a saturation effect is observed. The mechanism of this effect was proposed.

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