Impact of grating spacing and electric field on real time updatable holographic recording in nanoscale ZnSe film assisted liquid crystal cells

2012 ◽  
Vol 101 (21) ◽  
pp. 211118 ◽  
Author(s):  
Hua Zhao ◽  
Chao Lian ◽  
Feng Huang ◽  
Tingyu Xue ◽  
Xiudong Sun ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Real Time ◽  
Holographic Recording ◽  
Znse Film ◽  
Crystal Cells ◽  
Grating Spacing

Investigation on dynamic holographic display in liquid crystal film doped with carbon dots

2020 ◽  
Vol 10 (6) ◽  
pp. 780-787
Author(s):  
Hongyue Gao ◽  
Suna Li ◽  
Jicheng Liu ◽  
Wen Zhou ◽  
Fan Xu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Real Time ◽  
Diffraction Efficiency ◽  
Carbon Dots ◽  
Applied Electric Field ◽  
Light Polarization ◽  
Forming Process ◽  
Time Dynamic ◽  
Holographic Display

In this paper, we studied the holographic properties of liquid crystal (LC) thin film doped with carbon dots (CDs) which can be used as real-time holographic display screen. The maximum value of diffraction efficiency can reach up to 30% by using a low applied electric field 0.2 V/μm. Holograms in the LC film can be dynamically formed and self-erased. The hologram build-up time and the hologram self-erasure time in the material is fast enough to realize video refresh rate. In addition, the forming process of hologram was studied. The holographic diffraction efficiency was measured depending on the intensity of recording light, applied electric field, the intensity of readout light, and readout light polarization direction. Triple enhancement of the diffraction efficiency value by the modulation of voltage under the condition of low recording energy is presented. Therefore, we develop an easy way to obtain real-time dynamic holographic red, green and blue displays with high diffraction efficiency, which allow the LC film doped with CDs to be used as a holographic 3D display screen.

scholarly journals Functional Smart Dispersed Liquid Crystals for Nano- and Biophotonic Applications: Nanoparticles-Assisted Optical Bioimaging

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
N. V. Kamanina ◽  
S. V. Likhomanova ◽  
Yu. A. Zubtcova ◽  
A. A. Kamanin ◽  
A. Pawlicka
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Solid Substrate ◽  
Holographic Recording ◽  
Self Assembling ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned ◽  
Crystal Cells ◽  
Modified Functional

Functional nematic liquid crystal structures doped with nano- and bioobjects have been investigated. The self-assembling features and the photorefractive parameters of the structured liquid crystals have been comparatively studied via microscopy and laser techniques. Fullerene, quantum dots, carbon nanotubes, DNA, and erythrocytes have been considered as the effective nano- and biosensitizers of the LC mesophase. The holographic recording technique based on four-wave mixing of the laser beams has been used to investigate the laser-induced change of the refractive index in the nano- and bioobjects-doped liquid crystal cells. The special accent has been given to novel nanostructured relief with vertically aligned carbon nanotubes at the interface: solid substrate-liquid crystal mesophase. It has been shown that this nanostructured relief influences the orienting ability of the liquid crystal molecules with good advantage. As a result, it provokes the orientation of the DNA. The modified functional liquid crystal materials have been proposed as the perspective systems for both the photonics and biology as well as the medical applications.

Smectic Layer Switching by an Electric Field in Ferroelectric Liquid Crystal Cells

1989 ◽  
Vol 28 (Part 2, No. 1) ◽  
pp. L119-L120 ◽  
Author(s):  
Masahiro Johno ◽  
A. D. L. Chandani ◽  
Yukio Ouchi ◽  
Hideo Takezoe ◽  
Atsuo Fukuda ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Smectic Layer ◽  
Ferroelectric Liquid Crystal ◽  
Crystal Cells
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