Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding

Ruicong Zhang; Zicheng Song; Wenxin Cao; Gang Gao; Lei Yang; Yurong He; Jiecai Han; Zhibo Zhang; Tianyu Wang; Jiaqi Zhu

doi:10.1038/s41377-024-01541-y

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Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding

Original Articles

- Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding
- Light: Science & Applications Vol. 13, Issue 10, Pages: 2331-2341(2024)
- Affiliations：
  
  1.Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, China
  2.Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450018, China
  3.Research Center of Analysis and Measurement, Harbin Institute of Technology, Harbin 150080, China
  4.School of Energy Science & Engineering, Harbin Institute of Technology, Harbin 150080, China
- Author bio：
  
  Zicheng Song (songzc@hit.edu.cn)
  Zhibo Zhang (zhangzhibo_hit@163.com)
  Tianyu Wang (tianyu_wang@hit.edu.cn)
  Jiaqi Zhu (zhujq@hit.edu.cn)
- Funds：
- DOI：10.1038/s41377-024-01541-y
  CLC：
- Published：31 October 2024，
  
  Published Online：30 August 2024，
  
  Received：14 February 2024，
  
  Revised：15 June 2024，
  
  Accepted：17 July 2024
- Accepted：
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Zhang, R. C. et al. Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding. Light: Science & Applications, 13, 2331-2341 (2024).
DOI：

Zhang, R. C. et al. Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding. Light: Science & Applications, 13, 2331-2341 (2024). DOI： 10.1038/s41377-024-01541-y.

摘要

Abstract

A novel multispectral smart window has been proposed

which features dynamic modulation of light transmittance and effective shielding against electromagnetic microwave radiation. This design integrates liquid crystal dynamic scattering and dye doping techniques

enabling the dual regulation of transmittance and scattering within a single-layer smart window. Additionally

the precise control of conductive film thickness ensures the attainment of robust microwave signal shielding. We present a theoretical model for ion movement in the presence of an alternating electric field

along with a novel approach to manipulate negative dielectric constant. The proposed model successfully enables a rapid transition between light transparent

absorbing and haze states

with an optimum drive frequency adjustable to approximately 300 Hz. Furthermore

the resistive design of the conductive layer effectively mitigates microwave radiation within the 2−18 GHz range. These findings offer an innovative perspective for future advancements in environmental construction.

关键词

Keywords

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