Homeotropic alignment of nematic liquid crystals with negative dielectric anisotropy

2010 ◽  
Vol 405 (8) ◽  
pp. 2118-2121 ◽  
Author(s):  
G. Singh ◽  
G. Vijaya Prakash ◽  
A. Choudhary ◽  
A.M. Biradar
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Dielectric Anisotropy ◽  
Homeotropic Alignment

Induced Homeotropic Alignment of Nematic Liquid Crystals by Doping Side-on Carbosilane-based Oligomers

2018 ◽  
Vol 47 (9) ◽  
pp. 1180-1183
Author(s):  
Kosuke Kaneko ◽  
Masaki Goto ◽  
Yohei Haketa ◽  
Hiromitsu Maeda ◽  
Tomonori Hanasaki
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Homeotropic Alignment

Spontaneous homeotropic alignment of nematic liquid crystals induced by a double-armed side chain liquid crystalline polymethacrylate

2017 ◽  
Vol 656 (1) ◽  
pp. 96-104 ◽  
Author(s):  
Osamu Haba ◽  
Wataru Matsuno ◽  
Nao Nakamura ◽  
Hiroshi Awano ◽  
Tatsuhiro Takahashi ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Nematic Liquid Crystals ◽  
Side Chain ◽  
Homeotropic Alignment

scholarly journals Electrically Controlled Diffraction Grating in Azo Dye-Doped Liquid Crystals

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1051 ◽  
Author(s):  
Chuen-Lin Tien ◽  
Rong-Ji Lin ◽  
Chi-Chung Kang ◽  
Bing-Yau Huang ◽  
Chie-Tong Kuo ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Electric Fields ◽  
Azo Dye ◽  
Nematic Liquid Crystals ◽  
Polarized Light ◽  
Dielectric Anisotropy ◽  
Linear Effect ◽  
Periodic Distribution ◽  
The Difference

This research applies the non-linear effect of azo dye-doped liquid crystal materials to develop a small, simple, and adjustable beam-splitting component with grating-like electrodes. Due to the dielectric anisotropy and optical birefringence of nematic liquid crystals, the director of the liquid crystal molecules can be reoriented by applying external electric fields, causing a periodic distribution of refractive indices and resulting in a diffraction phenomenon when a linearly polarized light is introduced. The study also discusses the difference in the refractive index (Δn), the concentration of azo dye, and the rising constant depending on the diffraction signals. The experimental results show that first-order diffraction efficiency can reach ~18% with 0.5 wt % azo dye (DR-1) doped in the nematic liquid crystals.

A new type of electrohydrodynamic instability in nematic liquid crystals with positive dielectric anisotropy

1993 ◽  
Vol 14 (5) ◽  
pp. 1319-1325 ◽  
Author(s):  
P. R. Kishore ◽  
T. F. S. Raj ◽  
A. W. Iqbal ◽  
S. S. Sastry ◽  
G. Satyanandam
Keyword(s):  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Dielectric Anisotropy ◽  
Electrohydrodynamic Instability ◽  
New Type

Nematic Liquid Crystals with Negative Dielectric Anisotropy: Molecular Design and Synthesis

Synlett ◽  
1999 ◽  
Vol 1999 (4) ◽  
pp. 389-396 ◽  
Author(s):  
Peer Kirsch ◽  
Volker Reiffenrath ◽  
Matthias Bremer
Keyword(s):  
Liquid Crystals ◽  
Molecular Design ◽  
Nematic Liquid Crystals ◽  
Dielectric Anisotropy ◽  
Design And Synthesis
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