Liquid crystal microlens with tunable-focus over focal plane driven by low-voltage signal

2012 ◽  
Author(s):  
Shengwu Kang ◽  
Xing Rong ◽  
Xinyu Zhang ◽  
Changsheng Xie ◽  
Tianxu Zhang
Keyword(s):  
Liquid Crystal ◽  
Focal Plane ◽  
Low Voltage ◽  
Voltage Signal

Low-Voltage Variable Gain Current Amplifier for High-Voltage Signal Processing

2009 ◽  
Vol 129 (8) ◽  
pp. 1511-1517
Author(s):  
Nicodimus Retdian ◽  
Jieting Zhang ◽  
Takahide Sato ◽  
Shigetaka Takagi
Keyword(s):  
Signal Processing ◽  
High Voltage ◽  
Low Voltage ◽  
Current Amplifier ◽  
Variable Gain ◽  
Voltage Signal

scholarly journals Low voltage and high contrast blue phase liquid crystal with red-shifted Bragg reflection

2013 ◽  
Vol 102 (1) ◽  
pp. 011113 ◽  
Author(s):  
Jin Yan ◽  
Zhenyue Luo ◽  
Shin-Tson Wu ◽  
Jyh-Wen Shiu ◽  
Yu-Cheng Lai ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Low Voltage ◽  
Bragg Reflection ◽  
High Contrast ◽  
Phase Liquid ◽  
Blue Phase

Low voltage tunable in-line channel dropping filter using liquid crystal waveguide overlays

1997 ◽  
Vol 33 (11) ◽  
pp. 985 ◽  
Author(s):  
I.S. Mauchline ◽  
W.I. Madden ◽  
W. Johnstone
Keyword(s):  
Liquid Crystal ◽  
Low Voltage

Low-voltage driving in nematic liquid crystal overlayered waveguide

1986 ◽  
Vol 4 (3) ◽  
pp. 360-363 ◽  
Author(s):  
Y. Okamura ◽  
K. Kitatani ◽  
S. Yamamoto
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Low Voltage

Modeling and simulation of nematic liquid crystal microlens with electrically focal-swing over focal plane

2013 ◽  
Author(s):  
Zaihong Mei ◽  
Shengwu Kang ◽  
Xinyu Zhang ◽  
Hongshi Sang ◽  
Changsheng Xie
Keyword(s):  
Liquid Crystal ◽  
Modeling And Simulation ◽  
Nematic Liquid Crystal ◽  
Focal Plane

Silicon nanostructure-doped polymer/nematic liquid crystal composites for low voltage-driven smart windows

2021 ◽  
Author(s):  
Zemin He ◽  
Ping Yu ◽  
Huimin Zhang ◽  
Yuzhen Zhao ◽  
Yanfang Zhu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Polymer Matrix ◽  
Performance Test ◽  
Low Voltage ◽  
Sio2 Nanoparticles ◽  
Silicon Nanostructures ◽  
Driving Voltage ◽  
Optical Performance ◽  
Smart Windows

Abstract In this work, two silicon nanostructures were doped into polymer/nematic liquid crystal composites to regulate the electric-optical performance. Commercial SiO2 nanoparticles and synthesized thiol polyhedral oligomeric silsesquioxane (POSS-SH) were chosen as the dopants to afford the silicon nanostructures. SiO2 nanoparticles were physically dispersed in the composites and the nanostructure from POSS-SH was implanted into the polymer matrix of the composites via photoinduced thiol-ene crosslinking. SEM results indicated that the implantation of POSS microstructure into the polymer matrix was conducive to obtaining the uniform porous polymer microstructures in the composites while the introduction of SiO2 nanoparticles led to the loose and heterogeneous polymer morphologies. The electric-optical performance test results also demonstrated that the electric-optical performance regulation effect of POSS microstructure was more obvious than that of SiO2 nanoparticles. The driving voltage was reduced by almost 80% if the concentration of POSS-SH in the composite was nearly 8 wt% and the sample could be completely driven by the electric field whose voltage was lower than the safe voltage for continuous contact (24 V). This work could provide a creative approach for the regulation of electric-optical performance for polymer/nematic liquid crystal composites and the fabrication of low voltage-driven PDLC films for smart windows.

scholarly journals High-Performance Polymer Dispersed Liquid Crystal Enabled by Uniquely Designed Acrylate Monomer

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1625 ◽  
Author(s):  
Rijeesh Kizhakidathazhath ◽  
Hiroya Nishikawa ◽  
Yasushi Okumura ◽  
Hiroki Higuchi ◽  
Hirotsugu Kikuchi
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Low Voltage ◽  
Polymer Networks ◽  
Mesh Size ◽  
Laser Scanning Microscopy ◽  
Present System ◽  
Driving Voltage ◽  
Acrylate Monomer ◽  
Polymer Dispersed

The widespread electro–optical applications of polymer dispersed liquid crystals (PDLCs) are hampered by their high-driving voltage. Attempts to fabricate PDLC devices with low driving voltage sacrifice other desirable features of PDLCs. There is thus a clear need to develop a method to reduce the driving voltage without diminishing other revolutionary features of PDLCs. Herein, we report a low-voltage driven PDLC system achieved through an elegantly simple and uniquely designed acrylate monomer (A3DA) featuring a benzene moiety with a dodecyl terminal chain. The PDLC films were fabricated by the photopolymerization of mono- and di-functional acrylate monomers (19.2 wt%) mixed in a nematic liquid crystal E7 (80 wt%). The PDLC film with A3DA exhibited an abrupt decline of driving voltage by 75% (0.55 V/μm) with a high contrast ratio (16.82) while maintaining other electro–optical properties almost the same as the reference cell. The response time was adjusted to satisfactory by tuning the monomer concentration while maintaining the voltage significantly low (3 ms for a voltage of 0.98 V/μm). Confocal laser scanning microscopy confirmed the polyhedral foam texture morphology with an average mesh size of approximately 2.6 μm, which is less in comparison with the mesh size of reference PDLC (3.4 μm), yet the A3DA-PDLC showed low switching voltage. Thus, the promoted electro–optical properties are believed to be originated from the unique polymer networks formed by A3DA and its weak anchoring behavior on LCs. The present system with such a huge reduction in driving voltage and enhanced electro–optical performance opens up an excellent way for abundant perspective applications of PDLCs.

Low-voltage electro-optical memory device based on NiO nanorods dispersed in a ferroelectric liquid crystal

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 53873-53881 ◽  
Author(s):  
Achu Chandran ◽  
Jai Prakash ◽  
Jitendra Gangwar ◽  
Tilak Joshi ◽  
Avanish Kumar Srivastava ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Low Power ◽  
Nickel Oxide ◽  
Nonvolatile Memory ◽  
Low Voltage ◽  
Optical Memory ◽  
Memory Device ◽  
Ferroelectric Liquid Crystal ◽  
Oxide Nanorods ◽  
Nonvolatile Memory Device

A low-power nonvolatile memory device is fabricated by dispersing nickel oxide nanorods (nNiO) into a ferroelectric liquid crystal (FLC) host. The dipolar nNiO adsorbed ions in the FLC and thereby reduced the screening effect, which resulted in the enhanced memory behavior.

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