Polarized Infrared Spectroscopic Study on Hindered Rotation around the Molecular Axis in the Smectic-C* Phase of a Ferroelectric Liquid Crystal with a Naphthalene Ring. Application of Two-Dimensional Correlation Spectroscopy to Polarization Angle-Dependent Spectral Variations

2000 ◽  
Vol 104 (13) ◽  
pp. 2846-2852 ◽  
Author(s):  
Yoshihisa Nagasaki ◽  
Toshiaki Yoshihara ◽  
Yukihiro Ozaki
Keyword(s):  
Liquid Crystal ◽  
Spectroscopic Study ◽  
Correlation Spectroscopy ◽  
Polarization Angle ◽  
Infrared Spectroscopic Study ◽  
Ferroelectric Liquid Crystal ◽  
Two Dimensional ◽  
Naphthalene Ring ◽  
Hindered Rotation ◽  
Smectic C

Ferroelectric Liquid Crystal Light Valve Using SiO2 / A-Si:H Photodiode

1991 ◽  
Vol 219 ◽  
Author(s):  
T. Horikawa ◽  
S. Tahata ◽  
S. Kaho ◽  
T. Masumi ◽  
N. Mikami ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Dark Conductivity ◽  
Ferroelectric Liquid Crystal ◽  
Two Dimensional ◽  
Metal Insulator ◽  
Resolution Capability ◽  
New Type ◽  
Light Valve ◽  
Mis Diode ◽  
High Photosensitivity

ABSTRACTA new type of ferroelectric liquid crystal light valve (FLCLV) is presented. The design of the FLCLV is based upon the linear equivalent circuit analyses. A photosensor in the FLCLV consists of a metal-insulator-semiconductor (MIS) photodiode. A-Si:H doped with boron and nitrogen [a-Si:(:N:B)] is used in the MIS diode. The a-Si:H(:B:N) film has a dark-conductivity of less than 1×1012 S/cm and a high photosensitivity.Consequently, the writing characteristics of the FLCLV for a two dimensional (2D) image are evaluated. Using writing light of 630 nm and 1 mW/cm2, a high resolution capability of 120∼140 1p/mm is obtained.

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