scholarly journals Nematic Liquid Crystal Confined in Electrochemically Etched Porous Silicon: Optical Characterization and Applications in Photonics

10.5772/9680 ◽  
2009 ◽  
Author(s):  
Georgiy V. ◽  
Volodymyr Tkachenko ◽  
Giancarlo Abbate ◽  
Luca De ◽  
Ilaria Rea ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Porous Silicon ◽  
Nematic Liquid Crystal ◽  
Optical Characterization

scholarly journals Optical characterization of a dual-frequency hybrid aligned nematic liquid crystal cell

2005 ◽  
Vol 13 (7) ◽  
pp. 2627 ◽  
Author(s):  
S. A. Jewell ◽  
J. R. Sambles
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Characterization ◽  
Liquid Crystal Cell ◽  
Dual Frequency ◽  
Crystal Cell

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.

Free-standing porous silicon film with a tunable microcavity containing nematic liquid crystal

2008 ◽  
Author(s):  
G.V. Tkachenko ◽  
A.A. Dyomin ◽  
V. Tkachenko ◽  
G. Abbate ◽  
L. De Stefano ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Porous Silicon ◽  
Nematic Liquid Crystal ◽  
Silicon Film ◽  
Free Standing

Photoluminescence of Liquid Crystal Infiltrated Porous Silicon Film

2010 ◽  
Vol 663-665 ◽  
pp. 812-815 ◽  
Author(s):  
Yuan Ming Huang ◽  
Qing Lan Ma ◽  
Bao Gai Zhai
Keyword(s):  
Liquid Crystal ◽  
Porous Silicon ◽  
Nematic Liquid Crystal ◽  
Silicon Film ◽  
Luminescent Properties ◽  
Silicon Films ◽  
The Other ◽  
Deep Blue ◽  
Pl Spectrum ◽  
The Cost

We have investigated the photoluminescence (PL) of a porous silicon film in which a typical nematic liquid crystal 4-pentyl-4’-cyanobiphenyl infiltrated. Before the liquid crystal filtration, the PL spectrum of the porous silicon film is comprised of two luminescent bands, one of which is located at about 600 nm whereas the other of which is located at about 450 nm. After the liquid crystal filtration, the porous silicon film gives off intense deep-blue PL with its peak located at about 400 nm at the cost of the complete quenching of the PL from the original porous silicon film. Our results have demonstrated that the luminescent properties of porous silicon films can be dramatically modified by liquid crystal infiltration.

Polarizing Optical Microscopic Characterization of Nematic Liquid Crystal Confined in Porous Silicon

2011 ◽  
Vol 181-182 ◽  
pp. 83-87
Author(s):  
Yuan Ming Huang ◽  
Qing Lan Ma ◽  
Bao Gai Zhai
Keyword(s):  
Experimental Study ◽  
Liquid Crystal ◽  
Porous Silicon ◽  
Optical Microscopy ◽  
Nematic Liquid Crystal ◽  
Experimental Investigations ◽  
Electro Optic ◽  
The Given

With polarizing optical microscopy we have investigated the electro-optic properties of a nematic liquid crystal 4-n-pentyl-4′-cyanobipheny confined in the microchannels of porous silicon. Experimental study shows clearly that the liquid crystal molecules tend to align parallel to the direction of the pore columns in porous silicon. Schlieren textures with S = +1 and +2 disclinations were recorded. Our experimental investigations show that uniaxial alignment, the planar radial and the escaped radial configurations exist around the given microchannels of porous silicon.

Optical Characterization of Homogeneous Nematic Liquid Crystal Cells Based on the Liquid Crystal Continuum Model

1995 ◽  
Vol 34 (Part 1, No. 11) ◽  
pp. 6116-6124 ◽  
Author(s):  
Werner Klaus ◽  
Yasushi Suzuki ◽  
MasahiroTsuchiya ◽  
Takeshi Kamiya
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Continuum Model ◽  
Optical Characterization ◽  
Crystal Cells

Electro-optical characterization of switchable Bragg gratings based on nematic liquid crystal–photopolymer composites with spatially ordered structure

2005 ◽  
Vol 81 (2-4) ◽  
pp. 281-287 ◽  
Author(s):  
G. Zharkova ◽  
I. Samsonova ◽  
S. Streltsov ◽  
V. Khachaturyan ◽  
A. Petrov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Characterization ◽  
Bragg Gratings ◽  
Ordered Structure

Tunable NIR filter based on a free-standing porous silicon film containing nematic liquid crystal

2009 ◽  
Vol 11 (10) ◽  
pp. 105106 ◽  
Author(s):  
Georgiy V Tkachenko ◽  
Volodymyr Tkachenko ◽  
Luca De Stefano ◽  
Igor A Sukhoivanov
Keyword(s):  
Liquid Crystal ◽  
Porous Silicon ◽  
Nematic Liquid Crystal ◽  
Silicon Film ◽  
Free Standing

BaTiO3 ferroelectric nanoparticles dispersed in 5CB nematic liquid crystal: Synthesis and electro-optical characterization

2010 ◽  
Vol 107 (7) ◽  
pp. 074102 ◽  
Author(s):  
J.-F. Blach ◽  
S. Saitzek ◽  
C. Legrand ◽  
L. Dupont ◽  
J.-F. Henninot ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Characterization ◽  
Crystal Synthesis
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