scholarly journals Efficient visible-light full-color tuning of self-organized helical superstructures enabled by fluorinated chiral switches

RSC Advances ◽  
2018 ◽  
Vol 8 (68) ◽  
pp. 38935-38940 ◽  
Author(s):  
Lang Qin ◽  
Wei Gu ◽  
Yingying Chen ◽  
Jia Wei ◽  
Yanlei Yu
Keyword(s):  
Liquid Crystals ◽  
Visible Light ◽  
Blue Light ◽  
Visible Spectrum ◽  
Cholesteric Liquid Crystals ◽  
Color Tuning ◽  
Dynamic Tuning ◽  
Full Color ◽  
Self Organized ◽  
Entire Visible Spectrum

Reversible dynamic tuning of the reflection color from cholesteric liquid crystals within the entire visible spectrum is driven by green and blue light via newly designed chiral switches.

scholarly journals Spatial multiplexing holographic combiner for glasses-free augmented reality

Nanophotonics ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 3003-3010
Author(s):  
Jiacheng Shi ◽  
Wen Qiao ◽  
Jianyu Hua ◽  
Ruibin Li ◽  
Linsen Chen
Keyword(s):  
Augmented Reality ◽  
Large Scale ◽  
Motion Parallax ◽  
Visible Spectrum ◽  
Physical World ◽  
Spatial Multiplexing ◽  
White Balance ◽  
Full Color ◽  
Entire Visible Spectrum ◽  
3D Scene

AbstractGlasses-free augmented reality is of great interest by fusing virtual 3D images naturally with physical world without the aid of any wearable equipment. Here we propose a large-scale spatial multiplexing holographic see-through combiner for full-color 3D display. The pixelated metagratings with varied orientation and spatial frequency discretely reconstruct the propagating lightfield. The irradiance pattern of each view is tailored to form super Gaussian distribution with minimized crosstalk. What’s more, spatial multiplexing holographic combiner with customized aperture size is adopted for the white balance of virtually displayed full-color 3D scene. In a 32-inch prototype, 16 views form a smooth parallax with a viewing angle of 47°. A high transmission (>75%) over the entire visible spectrum range is achieved. We demonstrated that the displayed virtual 3D scene not only preserved natural motion parallax, but also mixed well with the natural objects. The potential applications of this study include education, communication, product design, advertisement, and head-up display.

Visible Light Rewritable and Long‐Lived Colors in Cholesteric Liquid Crystals: A Facile Co‐Doping Strategy

2019 ◽  
Vol 40 (11) ◽  
pp. 1900037 ◽  
Author(s):  
Dongxu Zhao ◽  
Xiaoyu Zhao ◽  
Jing Wang ◽  
Haiyan Peng ◽  
Yonggui Liao ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Visible Light ◽  
Cholesteric Liquid Crystals ◽  
Co Doping

scholarly journals Subwavelength sorting of full-color based on anti-Hermitian metasurfaces

Nanophotonics ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 967-974
Author(s):  
Seong Jun Kim ◽  
Changhyun Lee ◽  
Sangtae Jeon ◽  
Junghyun Park ◽  
Soo Jin Kim
Keyword(s):  
Optical Sensors ◽  
Detection System ◽  
Incident Light ◽  
Practical Interest ◽  
Target Position ◽  
Visible Spectrum ◽  
Color Filter ◽  
Full Color ◽  
Spectral Linewidth ◽  
Entire Visible Spectrum

AbstractSplitting the spectrum of incident light at nanoscale has been of great scientific and practical interest due to its potential application in various optical sensors. For many years, researchers have been striving to realize the full-color sorting of light at subwavelength scale, while keeping the loss of incident photons to a minimum. In this article, we present semiconductor-based metasurfaces that facilitate the efficient sorting of full-color by inducing anti-Hermitian coupling between multiple nanoantenna arrays. To achieve this, we first explore how the coherent interactions between maximally crafted nanoantennas in the metasurfaces can be effectively controlled by judiciously positioning them in both lateral and vertical directions, which leads to the switched coupling of light at each target position. Based on the analysis, we demonstrate a metasurface-based absorber that features efficient, spectropolarimetric detections over the entire visible spectrum, ranging from 470 to 630 nm. In addition, the metasurface detects relatively narrow spectral linewidth of 60 nm and shows the sensitivity up to 70%, which surpasses the previous works on subwavelength photon sorting or color filter-based detection system. We envision that our approach provides guidelines for realizing the metasurfaces with enhanced functionalities, that is the increase of spectral channels for detection in a given subwavelength-scaled unit cell.

Full-color photo-addressable electronic paper using cholesteric liquid crystals and organic photoconductors

2008 ◽  
Vol 16 (12) ◽  
pp. 1243 ◽  
Author(s):  
Haruo Harada ◽  
Makoto Gomyo ◽  
Yasunori Okano ◽  
Taijyu Gan ◽  
Chisato Urano ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Full Color ◽  
Electronic Paper

Stabilized electrically induced Helfrich deformation and enhanced color tuning in cholesteric liquid crystals

Soft Matter ◽  
2017 ◽  
Vol 13 (46) ◽  
pp. 8728-8735 ◽  
Author(s):  
Meina Yu ◽  
Huai Yang ◽  
Deng-Ke Yang
Keyword(s):  
Liquid Crystals ◽  
Electric Field ◽  
Color Change ◽  
Cholesteric Liquid Crystals ◽  
Color Tuning ◽  
Ac Electric Field ◽  
Reflected Light ◽  
Periodic Layer

When subjected to an AC electric field perpendicular to its layers, the cholesteric planar state may undergo a periodic layer undulation, known as the Helfrich deformation, which generates a color change of the reflected light.

scholarly journals Electrothermal Color Tuning of Cholesteric Liquid Crystals Using Interdigitated Electrode Patterns

2020 ◽  
pp. 2000958
Author(s):  
Arne A. F. Froyen ◽  
Michael Wübbenhorst ◽  
Danqing Liu ◽  
Albert P. H. J. Schenning
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Interdigitated Electrode ◽  
Color Tuning
Sign in / Sign up

Export Citation Format

Share Document