High memory effects in polymer dispersed chiral liquid crystals with negative dielectric anisotropy

1996 ◽  
Vol 79 (11) ◽  
pp. 8193-8196 ◽  
Author(s):  
A. Magnaldo ◽  
J. Nourry ◽  
P. Sixou
Keyword(s):  
Liquid Crystals ◽  
Memory Effects ◽  
Dielectric Anisotropy ◽  
Polymer Dispersed ◽  
Chiral Liquid Crystals

Annealing and memory effects in polymer‐dispersed chiral liquid crystals

1996 ◽  
Vol 80 (5) ◽  
pp. 2586-2588
Author(s):  
A. Magnaldo ◽  
J. Nourry ◽  
P. Sixou
Keyword(s):  
Liquid Crystals ◽  
Memory Effects ◽  
Polymer Dispersed ◽  
Chiral Liquid Crystals

Linear light modulation by polymer-dispersed chiral liquid crystals

1994 ◽  
Author(s):  
Lachezar Komitov ◽  
Sven T. Lagerwall ◽  
Giuseppe Chidichimo
Keyword(s):  
Liquid Crystals ◽  
Light Modulation ◽  
Polymer Dispersed ◽  
Chiral Liquid Crystals

A 2*2 fiber optic switch using chiral liquid crystals

1990 ◽  
Vol 2 (2) ◽  
pp. 147-149 ◽  
Author(s):  
N.K. Shankar ◽  
J.A. Morris ◽  
C.P. Yakymyshyn ◽  
C.R. Pollock
Keyword(s):  
Liquid Crystals ◽  
Fiber Optic ◽  
Chiral Liquid Crystals

scholarly journals Dielectric Spectroscopy Analysis of Liquid Crystals Recovered from End-of-Life Liquid Crystal Displays

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2873
Author(s):  
Ana Barrera ◽  
Corinne Binet ◽  
Frédéric Dubois ◽  
Pierre-Alexandre Hébert ◽  
Philippe Supiot ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
End Of Life ◽  
Room Temperature ◽  
Liquid Crystal Displays ◽  
Dielectric Anisotropy ◽  
Frequency Range ◽  
Spectroscopy Analysis ◽  
Diamond Nanoparticles ◽  
Nematic Phases ◽  
Universal Law

In the present work, the dielectric properties of recycled liquid crystals (LCs) (non-purified, purified, and doped with diamond nanoparticles at 0.05, 0.1, and 0.2 wt%) were investigated. The studied LC mixtures were obtained from industrial recycling of end-of-life LC displays presenting mainly nematic phases. Dielectric measurements were carried out at room temperature on a frequency range from 0.1 to 106 Hz using an impedance analyzer. The amplitude of the oscillating voltage was fixed at 1 V using cells with homogeneous and homeotropic alignments. Results show that the dielectric anisotropy of all purified samples presents positive values and decreases after the addition of diamond nanoparticles to the LC mixtures. DC conductivity values were obtained by applying the universal law of dielectric response proposed by Jonscher. In addition, conductivity of the doped LC mixtures is lower than that of the undoped and non-purified LC.

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