Fast response dual-frequency liquid crystal switch with photo-patterned alignments

2012 ◽  
Vol 37 (17) ◽  
pp. 3627 ◽  
Author(s):  
Xiao-Wen Lin ◽  
Wei Hu ◽  
Xi-Kui Hu ◽  
Xiao Liang ◽  
Ye Chen ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Fast Response ◽  
Dual Frequency

scholarly journals Fast-response and high-efficiency optical switch based on dual-frequency liquid crystal polarization grating

2016 ◽  
Vol 6 (2) ◽  
pp. 597 ◽  
Author(s):  
Wei Duan ◽  
Peng Chen ◽  
Bing-Yan Wei ◽  
Shi-Jun Ge ◽  
Xiao Liang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Efficiency ◽  
Optical Switch ◽  
Fast Response ◽  
Dual Frequency ◽  
Polarization Grating

Continuously tunable and fast-response terahertz metamaterials using in-plane-switching dual-frequency liquid crystal cells

2015 ◽  
Vol 40 (9) ◽  
pp. 2021 ◽  
Author(s):  
Chia-Chun Chen ◽  
Wei-Fan Chiang ◽  
Min-Cheng Tsai ◽  
Shun-An Jiang ◽  
Tsung-Hao Chang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Fast Response ◽  
Dual Frequency ◽  
Crystal Cells ◽  
Terahertz Metamaterials

Dual-frequency liquid crystal-polymer grating for fast response optical beam steering

2019 ◽  
Vol 28 (10) ◽  
pp. 105036 ◽  
Author(s):  
Xiaobing Shang ◽  
Dieter Cuypers ◽  
Fang Chen ◽  
Chaowei Xu ◽  
Quan Li ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Beam Steering ◽  
Fast Response ◽  
Liquid Crystal Polymer ◽  
Optical Beam ◽  
Dual Frequency ◽  
Crystal Polymer ◽  
Polymer Grating

scholarly journals Ultrafast electrical switching of nanostructured metadevice with dual-frequency liquid crystal

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Rafał Kowerdziej ◽  
Jerzy Wróbel ◽  
Przemysław Kula
Keyword(s):  
Liquid Crystal ◽  
Soft Matter ◽  
Fast Response ◽  
Electrical Signal ◽  
Dielectric Anisotropy ◽  
Dual Frequency ◽  
Active Devices ◽  
Total Response Time ◽  
Development Direction ◽  
Hybrid Metamaterial

AbstractShortening of switching times of various soft-matter-based tunable metamaterials is one of the key challenges to improve the functionality of modern active devices. Here we show an effective strategy in the evolution of soft-matter-based tunable metamaterials that makes possible acceleration of both on and off switching processes by using a dual-frequency liquid crystal mixture. The frequency-convertible dielectric anisotropy of the dual-frequency mixture enabled us to create a fast-response in-plane switching metasurface at the nanoscale, which could be tuned by an electrical signal with different frequencies. The results clearly show that the resonance of the metamaterial can be continuously and reversibly controlled within a wavelength range of 100 nm as the applied frequency is inverted between 1 kHz and 40 kHz, with a total response time (τ = τON + τOFF) of 1.89 ms. Furthermore, experimental characteristics of the hybrid metamaterial are in great agreement with numerical calculations, which allow us to anticipate active epsilon-near-zero behavior of the metadevice. This work indicates the future development direction of liquid-crystal-based active plasmonic systems.

scholarly journals High Contrast and Fast Response Polarization-Independent Reflective Display Using a Dye-Doped Dual-Frequency Liquid Crystal Gel

2006 ◽  
Vol 453 (1) ◽  
pp. 371-378 ◽  
Author(s):  
Yi-Hsin Lin ◽  
Hongwen Ren ◽  
Sebastian Gauza ◽  
Yung-Hsun Wu ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Fast Response ◽  
High Contrast ◽  
Dual Frequency ◽  
Reflective Display ◽  
Polarization Independent

Fast response liquid crystal mode

2013 ◽  
Vol 21 (5) ◽  
pp. 209-212
Author(s):  
Chung-Yung Lee ◽  
Man-Chun Tseng ◽  
Hoi-Sing Kwok
Keyword(s):  
Liquid Crystal ◽  
Fast Response

Electro-optical property of polymerized liquid crystal devices using linearly polarized UV irradiation

2021 ◽  
Author(s):  
Masahiro Ito ◽  
Kazuma Kajiwara ◽  
Kohki Takatoh
Keyword(s):  
Liquid Crystal ◽  
Uv Light ◽  
Strong Dependence ◽  
Fast Response ◽  
Alignment Layer ◽  
Liquid Crystal Devices ◽  
Decay Times ◽  
Linearly Polarized ◽  
Reactive Mesogens ◽  
Strong Anchoring

Abstract Display characteristics have a fairly strong dependence on the configuration of the liquid crystal (LC) molecules and interactions between the LC molecules and the alignment layer surface. To obtain LC devices with a fast response, the usage of reactive mesogens (RMs) have been studied. RMs polymerize in the vicinity of the alignment layer. We assessed the effectiveness of linearly polarized UV light for polymer formation. Three kinds of UV light, namely (i)non-polarized (ii)parallel to, and (iii)perpendicular to the rubbing direction, were used to irradiate LC cells with RM concentrations of 5wt% and 10wt%. For both RM concentrations, LC devices using LPUV parallel to the rubbing direction yielded the shortest decay times. SEM observation revealed that the fibrils polymerized linearly in the same direction on using LPUV parallel to the rubbing direction. The decay time was presumably shortened by the strong anchoring force and high alignment ability of the linear fibrils.

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