首页|An inorganic liquid crystalline dispersion with 2D ferroelectric moieties

An inorganic liquid crystalline dispersion with 2D ferroelectric moieties

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Electro-optical effect-based liquid crystal devices have been extensively used in optical modulation techniques,in which the Kerr coefficient reflects the sensitivity of the liquid crystals and determines the strength of the device's operational electric field.The Peterlin-Stuart theory and the O'Konski model jointly indicate that a giant Kerr coefficient could be obtained in a material with both a large geometrical anisotropy and an intrinsic polarization,but such a material is not yet reported.Here we reveal a ferroelectric effect in a monolayer two-dimensional mineral vermiculite.A large geometrical anisotropy factor and a large inherent electric dipole together raise the record value of Kerr coefficient by an order of magnitude,till 3.0 × 10-4 m V-2.This finding enables an ultra-low operational electric field of 102-104 V m-1 and the fabrication of electro-optical devices with an inch-level electrode separation,which has not previously been practical.Because of its high ultraviolet stability(decay＜1％under ultraviolet exposure for 1000 hours),large-scale production,and energy efficiency,prototypical displayable billboards have been fabricated for outdoor interactive scenes.This work provides new insights for both liquid crystal optics and two-dimensional ferroelectrics.

2D materialslayered mineralsvermiculiteferroelectricinorganic liquid crystalKerr coefficient

Ziyang Huang、Zehao Zhang、Rongjie Zhang、Baofu Ding、Liu Yang、Keyou Wu、Youan Xu、Gaokuo Zhong、Chuanlai Ren、Jiarong Liu、Yugan Hao、Menghao Wu、Teng Ma、Bilu Liu

展开 >

Shenzhen Graphene Centre,Shenzhen Key Laboratory of Advanced Layered Materials for Value-added Applications,Tsinghua-Berkeley Shenzhen Institute and Institute of Materials Research,Tsinghua Shenzhen International Graduate School,Tsinghua University,Shenzhen 518055,China

Institute of Technology for Carbon Neutrality,Faculty of Materials Science and Engineering,Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China

School of Physics and Institute for Quantum Science and Engineering,School of Chemistry and Institute of Theoretical Chemistry,Huazhong University of Science and Technology,Wuhan 430074,China

Xi'an Research Institute of High Technology,Xi'an 710025,China

Shenzhen Institute of Advanced Technology,Chinese Academy of Sciences,Shenzhen 518055,China

Department of Applied Physics,Hong Kong Polytechnic University,Hong Kong,China

展开 >

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Guangdong Innovative and Entrepreneurial Research Team ProgramInnovation Team Project of Department of Education of Guangdong Province深圳市科技计划Shenzhen basic research projectShenzhen basic research projectShenzhen basic research projectShenzhen basic research projectTsinghua Shenzhen Intemational Graduate SchoolShenzhen Pengrui Young Faculty Program of Shenzhen Pengrui Foundation

5192010500252125309522733115199134351991340521881012017ZT07C3412023KCXTD051ZDSYS20230626091100001WDZC20200819095319002JCYJ20190809180605522JCYJ20220818100806014WDZC20231128154552002SZPR2023002

2024

10.1093/nsr/nwae108

国家科学评论(英文版)

国家科学评论(英文版)

CSTPCD
ISSN：
年,卷(期)：2024.11(5)
  • 46