scholarly journals Ferroelectric Liquid Crystals: Physics and Applications

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 470 ◽  
Author(s):  
Guo ◽  
Yan ◽  
Chigrinov ◽  
Zhao ◽  
Tribelsky
Keyword(s):  
Liquid Crystals ◽  
High Resolution ◽  
Contrast Ratio ◽  
Fast Response ◽  
High Contrast ◽  
Ferroelectric Liquid Crystals ◽  
Electrooptic Effects ◽  
Potential Applications ◽  
Anchoring Energy ◽  
General Operation

Electrooptic modes with fast response and high contrast ratio are highly desirable in modern photonics and displays. Ferroelectric liquid crystals (FLCs) are especially promising for fulfilling these demands by employing photoalignment technology in FLC cells. Three electrooptic modes including surface stabilized FLC (SSFLC), deformed helix ferroelectric (DHF) mode, and electrically suppressed helix (ESH) mode are reviewed with the corresponding electrooptic effects like bi- and multi-stable switching, continuous modulation of grayscale or phase, and high contrast switching. The general operation principles FLC electrooptic modes are described, and then the characteristics of each modes for potential applications are summarized. With the advantages of controllable anchoring energy, the photoalignment provides FLC samples with uniform alignment and high contrast ratio. The fast FLCs with a high resolution and high contrast can be used in the next generation display including field sequential color FLC microdisplays, as well as switchable 2D/3D televisions.

scholarly journals All-Optical Ultra-Fast Graphene-Photonic Crystal Switch

Crystals ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 461 ◽  
Author(s):  
Mohammad Reza Jalali Azizpour ◽  
Mohammad Soroosh ◽  
Narges Dalvand ◽  
Yousef Seifi-Kavian
Keyword(s):  
Photonic Crystal ◽  
Integrated Circuits ◽  
Contrast Ratio ◽  
Fast Response ◽  
High Contrast ◽  
Switching Operation ◽  
Optical Integrated Circuits ◽  
All Optical ◽  
The Difference ◽  
Silicon Rods

In this paper, an all-optical photonic crystal-based switch containing a graphene resonant ring has been presented. The structure has been composed of 15 × 15 silicon rods for a fundamental lattice. Then, a resonant ring including 9 thick silicon rods and 24 graphene-SiO2 rods was placed between two waveguides. The thick rods with a radius of 0.41a in the form of a 3 × 3 lattice were placed at the center of the ring. Graphene-SiO2 rods with a radius of 0.2a were assumed around the thick rods. These rods were made of the graphene monolayers which were separated by SiO2 disks. The size of the structure was about 70 µm2 that was more compact than other works. Furthermore, the rise and fall times were obtained by 0.3 ps and 0.4 ps, respectively, which were less than other reports. Besides, the amount of the contrast ratio (the difference between the margin values for logics 1 and 0) for the proposed structure was calculated by about 82%. The correct switching operation, compactness, and ultra-fast response, as well as the high contrast ratio, make the presented switch for optical integrated circuits.

scholarly journals High-contrast imaging of 180° ferroelectric domains by optical microscopy using ferroelectric liquid crystals

2020 ◽  
Vol 116 (21) ◽  
pp. 212901
Author(s):  
Guillaume. F. Nataf ◽  
Mael Guennou ◽  
Giusy Scalia ◽  
Xavier Moya ◽  
Tim D. Wilkinson ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Optical Microscopy ◽  
High Contrast ◽  
Contrast Imaging ◽  
Ferroelectric Liquid Crystals ◽  
High Contrast Imaging ◽  
Ferroelectric Domains

Reflective Chiral-Homeotropic Liquid Crystal Displays

2011 ◽  
Vol 181-182 ◽  
pp. 281-284
Author(s):  
Zhi Ren ◽  
Song Tao Li ◽  
Xi Pai Liu
Keyword(s):  
Liquid Crystal ◽  
Response Time ◽  
Parameter Space ◽  
Contrast Ratio ◽  
Dynamic Parameter ◽  
Liquid Crystal Displays ◽  
Fast Response ◽  
High Contrast ◽  
Fast Response Time ◽  
Space Method

The performance of a reflective chiral-homeotropic (R-CH) liquid crystal (LC) is simulated by the dynamic parameter space method. The normally black reflective chiral-homeotropic display shows weak color dispersion, high contrast ratio, and fast response time.

Fabrication of a high-performance thin film polarizer using lyotropic chromonic liquid crystals using a high-resolution nanoscale template

2017 ◽  
Vol 5 (46) ◽  
pp. 12241-12248 ◽  
Author(s):  
Hyuk Jun Kim ◽  
Woo-Bin Jung ◽  
Hyeon Su Jeong ◽  
Hee-Tae Jung
Keyword(s):  
Thin Film ◽  
Liquid Crystals ◽  
High Resolution ◽  
High Performance ◽  
Potential Applications

Lyotropic chromonic liquid crystals (LCLCs) have attracted attention for their potential applications as thin-film polarizers.

P-77: FLC Materials with Fast Response Time and High Contrast Ratio for the τ-Vmin Mode FLCDs

1998 ◽  
Vol 29 (1) ◽  
pp. 778 ◽  
Author(s):  
M. Koden ◽  
T. Furukawa ◽  
M. Kabe ◽  
S. Okamoto ◽  
A. Sakaigawa ◽  
...  
Keyword(s):  
Response Time ◽  
Contrast Ratio ◽  
Fast Response ◽  
High Contrast ◽  
Fast Response Time

The high contrast ratio and fast response time of a liquid crystal display lit by a carbon nanotube field emission backlight unit

2008 ◽  
Vol 19 (23) ◽  
pp. 235306 ◽  
Author(s):  
Young Chul Choi ◽  
Ji Won Lee ◽  
Su Kyung Lee ◽  
Mun Seok Kang ◽  
Chang Soo Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Carbon Nanotube ◽  
Response Time ◽  
Field Emission ◽  
Liquid Crystal Display ◽  
Contrast Ratio ◽  
Fast Response ◽  
High Contrast ◽  
Fast Response Time

Optimization of alignment quality of ferroelectric liquid crystals by controlling anchoring energy

2014 ◽  
Vol 7 (2) ◽  
pp. 021701 ◽  
Author(s):  
Qi Guo ◽  
Abhishek K. Srivastava ◽  
Evgeny P. Pozhidaev ◽  
Vladimir G. Chigrinov ◽  
Hoi-Sing Kwok
Keyword(s):  
Liquid Crystals ◽  
Alignment Quality ◽  
Ferroelectric Liquid Crystals ◽  
Anchoring Energy
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