Article
Materials Science, Multidisciplinary
Zongcheng Miao, Xianliang Chen, Yutong Zhang, Dong Wang, Lei Wang
Summary: A flexible bistable cholesteric liquid crystal film with polymer spacer columns for displays was prepared by stepwise UV light polymerization, which showed better electro-optical performance and spacing stability.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Biomedical
Amr Al Abed, Yuan Wei, Reem M. Almasri, Xinyue Lei, Han Wang, Josiah Firth, Yingge Chen, Nathalie Gouailhardou, Leonardo Silvestri, Torsten Lehmann, Francois Ladouceur, Nigel H. Lovell
Summary: This paper introduces a novel approach using light to sense and transmit electrophysiological signals, demonstrating a passive optrode based on liquid crystal birefringence properties that performs well in terms of linearity, relative responsivity, and bandwidth. The technology has shown potential for miniaturization and could pave the way for high-bandwidth optical telecommunications techniques in ultra-miniature clinical and research applications for neural and cardiac interfaces.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Chemistry, Physical
Meishan Zhang, Xiaoshuai Li, Zhuhui Long, Ruicai Guo, Wenhui Gao, Hongmei Ma, Yubao Sun
Summary: Reverse-mode polymer-stabilized liquid crystal (RPSLC) plays a significant role in the field of optical display due to its ability to achieve a normal transparent state without the need for a driving voltage. This study focuses on optimizing the concentration and type of polymer monomers to improve the electro-optical properties of RPSLC, reducing the driving voltage, hysteresis, and enhancing the contrast ratio.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Se-Hoon Choi, Jin-Ah Kim, Gi Seok Heo, Hong-Gyu Park
Summary: A new method of dispersing copper (II) phthalocyanine is described to expand the application range of polymer-dispersed liquid crystals in smart-window technologies. By adjusting UV irradiation time, the performance of PDLC can be changed.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Multidisciplinary
Jin Xie, Tibin Zeng, Yingjie Zhou, Yide Yuan, Yaqin Zhou, Tiegang Lin, Xiangyu Jiang, Fan Fan, Shuangchun Wen
Summary: This article introduces an electrically regulated wedge liquid crystal (LC) cell for edge imaging, analyzing its theoretical basis and demonstrating its feasibility through experiments. The method can achieve broadband edge imaging, real-time mode switch between edge image and original image, and electrically controllable resolution.
Article
Biochemistry & Molecular Biology
Yuzhen Zhao, Jinqian Li, Yang Yu, Yang Zhao, Zhun Guo, Ruijuan Yao, Jianjing Gao, Yongming Zhang, Dong Wang
Summary: The research demonstrates that MgO nanoparticles significantly affect the microstructure of PDLC films by forming agglomerates. The addition of MgO nanoparticles leads to an improvement in the electro-optical properties of the system and a decrease in driving voltage.
Article
Engineering, Electrical & Electronic
Jingquan Xu, Kexin Chen, Yingying Qu, Chen Liu, Songnian Fu, Deming Liu
Summary: This article presents a novel double gratings configuration based on LCOS optical filter, which achieves higher spectral resolution by enlarging and accumulating dispersion. With this configuration, a spectral resolution of 1.63 GHz is achieved, almost tenfold enhancement compared to traditional single grating configuration.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Ryohei Hokari, Kyohei Takakuwa, Hirohisa Kato, Akitaka Yamamoto, Yusuke Yamaguchi, Kazuma Kurihara
Summary: This study presents a low-reflective wire-grid polariser (WGP) sheet for the visible light region, with nanowires made of sintered silver nanoparticle ink using a nanoprinting process. The sheet has high degree of polarization and low reflectance, and can achieve mass production through a special nanoprinting process.
SCIENTIFIC REPORTS
(2021)
Article
Energy & Fuels
Amid Ranjkesh, Yeongyu Choi, Jae-Won Huh, Seung-Won Oh, Tae-Hoon Yoon
Summary: A flexible cholesteric liquid crystal (CLC) polymer reflector is proposed in this study to selectively control the reflection of infrared (IR) light, effectively lowering indoor temperature. The fabricated IR reflector demonstrates thinness, high mechanical stability, flexibility, durability, resistance to solvents and acids, high transparency, and low haze in visible light. This innovative approach shows promise for applications in anti-IR devices, energy-saving windows for cars, and modern building facades.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Materials Science, Multidisciplinary
Runli Xia, Xiuhu Zhao, Jinxing Li, Huanyu Lei, Yaohao Song, Weifeng Peng, Xinxin Zhang, Satoshi Aya, Mingjun Huang
Summary: Researchers have achieved an unprecedented enhancement of nonlinear properties by utilizing fluidic ferroelectric nematics as a spontaneous polarization background. The doped materials showed a dramatic increase in second-harmonic generation, about two orders of magnitude higher than the undoped materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Crystallography
Hong-Gyu Park, Jin-Ah Kim, Bong-Jin Ko
Summary: This study investigated the liquid crystal alignment characteristics of solution-derived ZnO films and found that the number of rubbing iterations had little effect on the alignment. The surface energy and polar energy of the rubbed ZnO films increased as the number of iterations increased. Rubbed ZnO films showed improved LC alignment compared to polyimide films and can be used as a substitute alignment film. It is also suitable for LC-based virtual reality/augmented reality display systems that require fast response times.
Article
Chemistry, Physical
Yang Zhou, Xingyu Zhang, Zheyao Xiong, Xifa Long, Yanqiang Li, Yangxin Chen, Xin Chen, Sangen Zhao, Zheshuai Lin, Junhua Luo
Summary: A new non-pi-conjugated deep-UV NLO material, K2Zn3(SO4)(HSO4)(2)F-4, has been successfully obtained by the hydrothermal method. It shows good phase matching properties and lower absorption edge, with a birefringence of 0.0126.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Xiaoxin Wang, Shaoliang Yu, Haijie Zuo, Xiaochen Sun, Juejun Hu, Tian Gu, Jifeng Liu
Summary: The study presents a low-power electro-reflective modulator design with high extinction ratio and spectral bandwidth, achieving a power consumption of under 2 fJ/bit. This enables high-bandwidth and ultralow power optical interconnect networks compatible with CMOS technologies.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Physical
Ariba Parveen, Jai Prakash, Gautam Singh
Summary: The impact of ferroelectric nanoparticles (FNPs), specifically strontium titanate (SrTiO3), on the dielectric, electro-optical, and electrical response of a room temperature liquid crystal (NLC), 5CB, has been investigated. The results show that the low frequency dielectric relaxation shifts towards higher frequency with increasing concentration of FNPs, but decreases to even lower than the pure sample at approximately 2 wt% concentration. The short axis molecular relaxation observed in a homeotropic cell shifts towards higher frequency by approximately 28% in the composites, independent of concentration. Furthermore, the dielectric spectra in the composites do not return to their original state even after approximately 22 minutes, indicating an apparent dielectric memory effect. The voltage dependent optical textures confirm the short term memory in the composites. The electrical response of the composites is also significantly different from the pure sample, further confirming the impact of FNPs on NLC.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Optics
Vaibhav Sharma, Aloka Sinha
Summary: We present a low threshold electro-optic switch based on a liquid crystal (LC) core channel waveguide using an in-plane switching configuration. The waveguide is fabricated on an indium tin oxide (ITO) coated glass substrate using laser direct writing lithography. The device exhibits low voltage control, low optical and insertion loss, high extinction ratio, and acts as a voltage-controlled polarization selector.
OPTICS AND LASER TECHNOLOGY
(2023)
