Color holographic display based on azo-dye-doped liquid crystal (Invited Paper)

2014 ◽  
Vol 12 (6) ◽  
pp. 060003-60006 ◽  
Author(s):  
Xiao Li Xiao Li ◽  
Chao Ping Chen Chao Ping Chen ◽  
Yan Li Yan Li ◽  
Xinhong Jiang Xinhong Jiang ◽  
Hongjing Li Hongjing Li ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Azo Dye ◽  
Holographic Display

Video-Rate Holographic Display Using Azo-Dye-Doped Liquid Crystal

2014 ◽  
Vol 10 (6) ◽  
pp. 438-443 ◽  
Author(s):  
Xiao Li ◽  
Chao Ping Chen ◽  
Hongyue Gao ◽  
Zhenghong He ◽  
Yuan Xiong ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Azo Dye ◽  
Holographic Display

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.

Effect of Photo-Isomerization of Azo Dyes on the Photonic Bandgap in Chiral Nematics

2011 ◽  
Vol 181-182 ◽  
pp. 257-260
Author(s):  
David Statman ◽  
Andrew Jockers ◽  
Daniel Brennan
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Azo Dyes ◽  
Azo Dye ◽  
Photonic Bandgap ◽  
Methyl Red ◽  
Central Wavelength ◽  
Chiral Nematic ◽  
Anchoring Energy ◽  
Pitch Length

Chiral nematic liquid crystals prepared with Grandjean texture demonstrate a photonic bandgap whose central wavelength is proportional to the pitch length, P, of the liquid crystal and whose width is given by (ne – no)P. We show that methyl red doped chiral nematics undergo a shift in the photonic bandgap upon photo-isomerization. This shift is a result of (1) photo-induced change in anchoring energy on the nematic surface, and (2) change in the natural pitch length from the photo-isomerization of the azo dye.

Polarization controllable spatial filter based on azo-dye-doped liquid-crystal film

2005 ◽  
Vol 30 (11) ◽  
pp. 1390 ◽  
Author(s):  
Tsung-Hsien Lin ◽  
Andy Y.-G. Fuh
Keyword(s):  
Liquid Crystal ◽  
Azo Dye ◽  
Spatial Filter ◽  
Crystal Film

79-3: Video-rate Holographic Display in ZnSe layer-assisted Quantum Dot Doped Liquid Crystal with High-photorefractive Sensitivity

2017 ◽  
Vol 48 (1) ◽  
pp. 1163-1165 ◽  
Author(s):  
Xiao Li ◽  
Zhicheng Song ◽  
Fulin Li ◽  
Xiaobin Dong ◽  
Weidong Liu
Keyword(s):  
Liquid Crystal ◽  
Quantum Dot ◽  
Holographic Display ◽  
Znse Layer

scholarly journals Spatially Broadband Coupled-Surface Plasmon Wave Assisted Transmission Effect in Azo-Dye-Doped Liquid Crystal Cell

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1357
Author(s):  
Guan-Ting Dong ◽  
Chun-Ta Wang ◽  
Yu-Ju Hung
Keyword(s):  
Liquid Crystal ◽  
Surface Plasmon ◽  
Azo Dye ◽  
Surface Plasmon Polariton ◽  
Mie Scattering ◽  
Aluminum Film ◽  
Liquid Crystal Cell ◽  
Metallic Surface ◽  
Crystal Cell ◽  
Plasmon Polariton

Active tuning on a plasmonic structure is discussed in this report. We examined the transient transmission effects of an azo-dye-doped liquid crystal cell on a metallic surface grating. The transition between isotropic and nematic phases in liquid crystal generated micro-domains was shown to induce the dynamic scattering of light from a He-Ne laser, thereby allowing transmission through a non-transparent aluminum film overlaying a dielectric grating. Various grating pitches were tested in terms of transmission effects. The patterned gratings include stripe ones and circular forms. Our results indicate that surface plasmon polariton waves are involved in the transmission process. We also demonstrated how momentum diagrams of gratings and Surface Plasmon Polariton (SPP) modes combined with Mie scattering effects could explain the broadband coupling phenomenon. This noteworthy transition process could be applied to the development of spatially broadband surface plasmon polariton coupling devices.

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