Demonstration Set-Up for Fast Switchable Diffraction of Laser Light Using the Computer Controlled Diffraction Grating Based on Ferroelectric Liquid Crystal

1995 ◽  
Vol 413 ◽  
Author(s):  
L. A. Beresnev ◽  
J. Hossfeld ◽  
W. Dultz ◽  
A. P. Onokhov ◽  
W. Haase
Keyword(s):  
Liquid Crystal ◽  
Spatial Resolution ◽  
Diffraction Grating ◽  
Laser Light ◽  
Ferroelectric Liquid Crystal ◽  
Diffraction Angle ◽  
Computer Controlled ◽  
Set Up

ABSTRACTSwitchable diffraction grating with 80 “idependently drived transparent stripe electrodes with spatial resolution 40 l/mm based on ferroelectric liquid crystal is presented. The switching of the diffraction angle till frequency 1kHz is demonstrated using the computer choise of assemblies of electrodes.

Synthesis of Small Silicate Spacers for Ferroelectric Liquid Crystal Displays

2010 ◽  
Vol 428-429 ◽  
pp. 383-386
Author(s):  
Bao Gai Zhai ◽  
Yuan Ming Huang
Keyword(s):  
Liquid Crystal ◽  
Laser Light ◽  
Spherical Shape ◽  
Liquid Crystal Displays ◽  
Tetraethyl Orthosilicate ◽  
Laser Light Scattering ◽  
Ferroelectric Liquid Crystal ◽  
Light Scattering Spectroscopy ◽  
Scanning Electron Microcopy ◽  
Scanning Electron

In the presence of the aqueous solution of ammonia, tetraethyl orthosilicate (TEOS) was hydrolyzed in the mixture of ethyl alcohol and water with the results of silica spacers. The spacer morphology and size distribution of the synthesized silica spacers were characterized with scanning electron microcopy and laser light scattering spectroscopy, respectively. Our results demonstrated that the synthesized silica spacers were monodispersed and were in perfect spherical shape with their sizes of about 0.7 m in diameter. The correlation between the spacer sizes and the amount of ammonia catalyst was examined, and the spacer sizes of the silica spacers strongly depended on the temperature of chemical reaction and the amount of catalyst. The diameter of silica spacers could be well controlled by controlling the amount of ammonia catalyst, and uniformly distributed silica spacers were produced. Behavior of the miscibility of the silica spacers with a nematic liquid crystal was examined.

9.1:Invited Paper: Fast High Resolution Ferroelectric Liquid Crystal Displays

2014 ◽  
Vol 45 (1) ◽  
pp. 90-92 ◽  
Author(s):  
Vladimir Chigrinov ◽  
Abhishek Srivastava ◽  
Eugene Pozhidaev ◽  
Guo Qi ◽  
Ma Ying ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Resolution ◽  
Liquid Crystal Displays ◽  
Ferroelectric Liquid Crystal

33‐4: Fast Switchable Multi‐Focus Polarization‐Dependent Ferroelectric Liquid‐Crystal Lenses for Virtual Reality

2021 ◽  
Vol 52 (1) ◽  
pp. 439-442
Author(s):  
Zheng-Nan Yuan ◽  
Ming Cheng ◽  
Xin-Yi Yu ◽  
Zhi-Bo Sun ◽  
An-Ran Li ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Liquid Crystal ◽  
Ferroelectric Liquid Crystal

scholarly journals Biaxial 360-degree scanning LIDAR using a liquid crystal control

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Seiji Nishiwaki
Keyword(s):  
Liquid Crystal ◽  
Laser Light ◽  
Side Surface ◽  
Parallel Beam ◽  
Grating Couplers ◽  
Autonomous Cars ◽  
Scanning Lidar ◽  
Center Axis ◽  
Circular Grating ◽  
Segmented Electrode

AbstractSophisticated non-mechanical technology for LIDARs is needed to realize safe autonomous cars. We have confirmed the operating principle of a non-mechanical LIDAR by combining concentric circular-grating couplers (CGCs) with a coaxially aligned rod lens. Laser light incident vertically on the center of the inner CGC along the center axis of the lens is radiated from the outer CGC and passes through the side surface of the lens. It is converted to a parallel beam that scans in two axes by applying voltages to two area-segmented electrode layers sandwiching the CGCs and a liquid crystal layer formed on the CGCs. We have demonstrated scanning whose motion ranges were 360 degrees horizontally and 10° vertically. A beam with a spread angle of 0.3° × 0.8° at a minimum swept vertically up to a frequency of 100 Hz and ten equally spaced beams scanned rotationally with a 6-degree cycle variation of spread of between 0.8° and 3.5°.

Weak anchoring resolved substrate interface and bulk mode processes in surface stabilized ferroelectric liquid crystal

2021 ◽  
Vol 325 ◽  
pp. 114705
Author(s):  
Sidra Khan ◽  
Jai Prakash ◽  
Shikha Chauhan ◽  
Amit Choudhary ◽  
Ashok M. Biradar
Keyword(s):  
Liquid Crystal ◽  
Ferroelectric Liquid Crystal ◽  
Substrate Interface ◽  
Bulk Mode

scholarly journals Simulations of disks in binary systems using parallelized SPH to reach extreme spatial resolution

2003 ◽  
Vol 208 ◽  
pp. 427-428
Author(s):  
D. Molteni ◽  
F. Fauci ◽  
G. Gerardi ◽  
M. A. Valenza
Keyword(s):  
Black Hole ◽  
Angular Momentum ◽  
Numerical Simulations ◽  
Spatial Resolution ◽  
Spectral Properties ◽  
Binary Systems ◽  
Compact Star ◽  
Close Binary ◽  
Gas Transfer ◽  
Set Up

Results of 3D numerical simulations of the gas transfer in close binary systems show that it is possible the production of accretion streams having low specific angular momentum in a region close to the accreting star. These streams are mainly placed above the orbital disc. The eventual formation of such bulges and shock heated flows is interesting in the context of advection dominated solutions and for the explanation of spectral properties of the Black Hole candidates in binary systems. We set up a parallelized version of 3D S.P.H. code, using domain decomposion. with increasing spatial resolution around the compact star.

Sign in / Sign up

Export Citation Format

Share Document