scholarly journals Dielectric and electrical characterization of 5CB nematic liquid crystal doped with silver nanoparticles

2016 ◽  
Vol 682 ◽  
pp. 012015 ◽  
Author(s):  
G B Hadjichristov ◽  
Y G Marinov ◽  
A G Petrov ◽  
L Marino ◽  
N Scaramuzza
Keyword(s):  
Silver Nanoparticles ◽  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Electrical Characterization

Electrical Characterization of E7 Liquid Crystal Molecules under the Impact of an External Electric Field (THz): A Theoretical approach

2020 ◽  
Vol 15 (2) ◽  
pp. 95-101
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Order Parameter ◽  
Optical Switching ◽  
Rapid Change ◽  
Electrical Characterization ◽  
Optical Switching Devices ◽  
The Impact ◽  
Orientation Of Molecules

In this work, different parameters of E7 liquid crystal (LC) have been calculated under the influence of an electric field in THz frequency. The E7 LC parameters have positive as well as negative values of order parameter and birefringence under the influence for an electric field. The director angle of E7 LC shows fast fluctuations above the angle θ=45° and due to rapid change in the orientation of molecules, fast electro-optical switching devices based on E7 LC can be designed. The refractive index of the E7 LC maintains stability in THz frequency.

Optical Characterization of the Twisted Nematic Liquid Crystal Display

2009 ◽  
Vol 1242 ◽  
Author(s):  
Carolina Rickenstorff ◽  
A. S. Ostrovsky
Keyword(s):  
Liquid Crystal ◽  
Interference Pattern ◽  
Nematic Liquid Crystal ◽  
Phase Modulation ◽  
Liquid Crystal Display ◽  
Optical Characterization ◽  
Gray Level ◽  
Twisted Nematic ◽  
Twisted Nematic Liquid Crystal

ABSTRACTA simple optical characterization technique is developed for to find the amplitude and phase modulation modes for the twisted nematic liquid crystal display (TN-LCD). The developed technique is based on intensity and pixel shift measurements of the interference pattern obtained from the TN-LCD sandwiched between two polarizers in a modified Young's experiment. Particularly, specimen LC2002 Holoeye is characterized and its amplitude and phase modulation curves as a function of image's gray level, bright B and contrast C are presented.

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