Chung-Yu Kuo, A. V. Emelyanenko, Sheng-Chi Hung, Wei-Chuan Chen, Chun-Yen Liu
{"title":"Improving the electro-optical properties of cholesteric liquid crystal devices via cellulose nanoparticle dopants","authors":"Chung-Yu Kuo, A. V. Emelyanenko, Sheng-Chi Hung, Wei-Chuan Chen, Chun-Yen Liu","doi":"10.1038/s41428-023-00879-1","DOIUrl":null,"url":null,"abstract":"In the presence of a strong electric field, helices in a cholesteric liquid crystal (CLC) phase might be unwound, leaving liquid crystal (LC) molecules parallel to the electric field, thereby realizing transparency. Previously, we developed a novel particle-doped CLC cell without alignment layers that exhibited liquid crystal display (LCD) capabilities via electro-optical properties. This ability represents a novel advancement in LCD fabrication, resulting in enhanced electro-optical characteristics. To explore the impact of chirality on LCDs, we synthesized and radially constructed cellulose particles. These were then employed as chiral dopants in the production of LCD cells. The fabricated chiral nanoparticle (CNP)-doped PC05 CLC cell showed a high transparency of 97.4% and a fast response time of 7.6 ms. For the prepared radially constructed PDAT-doped PD2T PSCLC cell, a high transmittance of 93.6% and a fast response time of 13 ms were achieved. Fabrication of LCD cells without an alignment layer on substrates was achieved by indicate adding polymeric chiral nanoparticles into CLC mixtures. Adding 2 wt% chiral CNPs promoted the transmittance of the CLCs from 3.4 to 97%. This novel chiral dopant technique enables the use of a new easy method for the fabrication of LCDs. Fabrication of LCD cell without alignment layer on substrates was achieved via simply adding the chiral polymer nanoparticles into CLC mixtures. The fabricated chiral nanoparticle (CNP) doped CLC cell shows a high contrast 97.4% and a fast response time 7.6 ms.","PeriodicalId":20302,"journal":{"name":"Polymer Journal","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41428-023-00879-1.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Journal","FirstCategoryId":"92","ListUrlMain":"https://www.nature.com/articles/s41428-023-00879-1","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"POLYMER SCIENCE","Score":null,"Total":0}
引用次数: 0
Abstract
In the presence of a strong electric field, helices in a cholesteric liquid crystal (CLC) phase might be unwound, leaving liquid crystal (LC) molecules parallel to the electric field, thereby realizing transparency. Previously, we developed a novel particle-doped CLC cell without alignment layers that exhibited liquid crystal display (LCD) capabilities via electro-optical properties. This ability represents a novel advancement in LCD fabrication, resulting in enhanced electro-optical characteristics. To explore the impact of chirality on LCDs, we synthesized and radially constructed cellulose particles. These were then employed as chiral dopants in the production of LCD cells. The fabricated chiral nanoparticle (CNP)-doped PC05 CLC cell showed a high transparency of 97.4% and a fast response time of 7.6 ms. For the prepared radially constructed PDAT-doped PD2T PSCLC cell, a high transmittance of 93.6% and a fast response time of 13 ms were achieved. Fabrication of LCD cells without an alignment layer on substrates was achieved by indicate adding polymeric chiral nanoparticles into CLC mixtures. Adding 2 wt% chiral CNPs promoted the transmittance of the CLCs from 3.4 to 97%. This novel chiral dopant technique enables the use of a new easy method for the fabrication of LCDs. Fabrication of LCD cell without alignment layer on substrates was achieved via simply adding the chiral polymer nanoparticles into CLC mixtures. The fabricated chiral nanoparticle (CNP) doped CLC cell shows a high contrast 97.4% and a fast response time 7.6 ms.
期刊介绍:
Polymer Journal promotes research from all aspects of polymer science from anywhere in the world and aims to provide an integrated platform for scientific communication that assists the advancement of polymer science and related fields. The journal publishes Original Articles, Notes, Short Communications and Reviews.
Subject areas and topics of particular interest within the journal''s scope include, but are not limited to, those listed below:
Polymer synthesis and reactions
Polymer structures
Physical properties of polymers
Polymer surface and interfaces
Functional polymers
Supramolecular polymers
Self-assembled materials
Biopolymers and bio-related polymer materials
Polymer engineering.