Highly Stable, Pretilted Homeotropic Alignment of Liquid Crystals Enabled by In Situ Self-Assembled, Dual-Wavelength Photoalignment
Source abstract
Abstract
Homeotropic alignment of liquid crystals (LCs) is one of the key modes used in commercial liquid crystal displays (LCDs) due to its advantages, such as high contrast ratios and fast response speed. Here, we report stable homeotropic LC alignment with a small pretilt angle in a nematic, negative LC host doped with additives including self-aligning agents, photoresponsive azo dyes, and reactive mesogen via an in situ self-assembled, dual-wavelength photoalignment approach. The underlying mechanism of stable, pretilted homeotropic LC alignment was further analyzed in detail. The achieved pretilted homeotropic LC cells are very stable against heat and UV light exposure and demonstrate excellent electro-optical characteristics. The experimental results show that such a noncontact, simple homeotropic alignment technique has big potential in many applications, such as high-quality LCDs, spatial light modulators, and other optoelectronic devices.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Liquid Crystal Research Advancements · Advanced Materials and Mechanics · Photonic Crystals and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
Harbin Institute of Technology, Harbin 150001, China
School of Physical Science and Technology, Ningbo University, Ningbo 315211, China
Light, Nanomaterials, & Nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, 10004 Troyes, France
State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Funding
Shenzhen Science and Technology Innovation Commission · Natural Science Foundation of Guangdong Province · Guangdong Province · State Key Laboratory of Applied Optics
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