Multispectral smart window: Dynamic light modulation and electromagnetic microwave shielding

Autor: Ruicong Zhang, Zicheng Song, Wenxin Cao, Gang Gao, Lei Yang, Yurong He, Jiecai Han, Zhibo Zhang, Tianyu Wang, Jiaqi Zhu
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Light: Science & Applications, Vol 13, Iss 1, Pp 1-11 (2024)
Druh dokumentu: article
ISSN: 2047-7538
DOI: 10.1038/s41377-024-01541-y
Popis: 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.
Databáze: Directory of Open Access Journals