Volume 16, Issue 1 2100396
Research Article
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Metasurface-Enabled High-Resolution Liquid-Crystal Alignment for Display and Modulator Applications

Jiawei Wang

Jiawei Wang

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Ke Li

Ke Li

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

Light, nanomaterials, nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, Troyes, 10004 France

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Huilin He

Huilin He

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

Harbin Institute of Technology, Harbin, 150001 China

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Wengfeng Cai

Wengfeng Cai

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Jianxun Liu

Jianxun Liu

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Zhen Yin

Zhen Yin

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Quanquan Mu

Quanquan Mu

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033 China

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Vincent K. S. Hisao

Vincent K. S. Hisao

Department of Applied Materials and Optoelectronic Engineering, National Chi Nan University, NanTou, 54561 Taiwan

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Davy Gérard

Davy Gérard

Light, nanomaterials, nanotechnologies (L2n), Université de Technologie de Troyes & CNRS ERL 7004, Troyes, 10004 France

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Dan Luo

Dan Luo

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Guixin Li

Guixin Li

Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

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Yan Jun Liu

Corresponding Author

Yan Jun Liu

Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, 518055 China

State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033 China

Key Laboratory of Energy Conversion and Storage Technologies, Southern University of Science and Technology, Ministry of Education, Shenzhen, 518055 China

E-mail: [email protected]

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First published: 15 November 2021
Citations: 22

Abstract

Optical metasurfaces are 2D flat elements that consist of spatially arranged meta-atoms. By carefully designing the metasurface, it is possible to fully control the properties of light in amplitude, phase, and/or polarization. When merged with liquid crystals (LCs), a metasurface can act as a reconfigurable optical component enabling dynamical control of light. However, many reports ignore the influence of the meta-atom's geometry on the orientation of LCs. Here, it is proposed to synergistically merge LCs and specially designed gold metasurfaces for multiple optical functions. Gold metasurfaces are designed as a template to align the LC molecules in a resolution of ≤2 µm. Meanwhile, the aligned LCs are used to actively control the polarization of the incident light, further achieving active modulation of the plasmonic resonances of gold metasurfaces. The synergistic mergence of LCs and metasurfaces can enable a designed optical device to work simultaneously in both visible and near infrared ranges, which is highly promising for multiple applications simultaneously, such as high-resolution display, modulation, anti-counterfeiting, beam deflection, LiDAR, etc.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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