Photorefractive effect of smectic-C liquid crystals containing a small amount of chiral compounds

2019 ◽  
Author(s):  
Takeo Sasaki
Keyword(s):  
Liquid Crystals ◽  
Photorefractive Effect ◽  
Chiral Compounds ◽  
Smectic C

Dynamic amplification of light signals in photorefractive ferroelectric liquid crystalline mixtures

2014 ◽  
Vol 174 ◽  
pp. 203-218 ◽  
Author(s):  
Takeo Sasaki ◽  
Satoshi Kajikawa ◽  
Yumiko Naka
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Photorefractive Effect ◽  
Gain Coefficient ◽  
Ferroelectric Liquid Crystals ◽  
Time Dynamic ◽  
Chiral Compounds ◽  
Smectic C ◽  
Dynamic Amplification

The photorefractive effect in photoconductive ferroelectric liquid crystals that contain photoconductive chiral compounds was investigated. Terthiophene compounds with chiral structures were chosen as the photoconductive chiral compounds, and they were mixed with an achiral smectic C liquid crystal. The mixtures exhibit the ferroelectric chiral smectic C phase. The photorefractivity of the mixtures was investigated by two-beam coupling experiments. It was found that the ferroelectric liquid crystals containing the photoconductive chiral compound exhibit a large gain coefficient of over 1200 cm−1 and a fast response time of 1 ms. Real-time dynamic amplification of an optical image signal of over 30 fps using the photorefractive ferroelectric liquid crystal was demonstrated.

A new theory of the nematic-smectic A-smectic C transition in liquid crystals

1987 ◽  
Vol 48 (8) ◽  
pp. 1241-1245 ◽  
Author(s):  
B.S. Andereck ◽  
B.R. Patton
Keyword(s):  
Liquid Crystals ◽  
Smectic A ◽  
Smectic C

Optics and electrooptics of chiral smectic C liquid crystals

1993 ◽  
Vol 163 (10) ◽  
pp. 1 ◽  
Author(s):  
G.S. Chilaya ◽  
V.G. Chigrinov
Keyword(s):  
Liquid Crystals ◽  
Smectic C

The Hysteresis of Acoustic Parameters and the Bistability of Smectic-C Liquid Crystals in a Magnetic Field

1990 ◽  
Vol 12 (4) ◽  
pp. 353-356 ◽  
Author(s):  
E. V Gevorkian ◽  
A. S Kashitsin ◽  
S. V Pasechnik ◽  
V. A Balandin
Keyword(s):  
Magnetic Field ◽  
Liquid Crystals ◽  
Acoustic Parameters ◽  
Smectic C

scholarly journals Smectic-A–smectic-C–smectic-C*multicritical point in ferroelectric liquid crystals

1994 ◽  
Vol 72 (22) ◽  
pp. 3558-3561 ◽  
Author(s):  
Shankar B. Rananavare ◽  
V. G. K. M. Pisipati ◽  
E. W. Wong
Keyword(s):  
Liquid Crystals ◽  
Multicritical Point ◽  
Ferroelectric Liquid Crystals ◽  
Smectic A ◽  
Smectic C
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