Research of nanofibres loaded with ultraviolet absorber to increase the wavewidth of cholesteric liquid crystals

Zhao, Yuzhen; Shi, Zuhui; Lang, Tingting; Li, Chaonian; Chu, Yaqin; Zhao, Yang; Guo, Zhun; Zhang, Huimin; Ma, Cheng; Wang, Dong; Miao, Zongcheng

doi:10.1016/j.optmat.2023.113545

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Characteristics of CLC-based smart windows have been reported theoretically and experimentally. CLC films with broadband reflection for smart windows were prepared by doping ultraviolet absorption dyes [ 23 , 24 ], adding nanofiber films [ 25 , 26 ], and performing photomask polymerization [ 27 ]. Zhang et al proposed the step-by-step light curing method, which formed a pitch gradient in the cell thickness direction, to develop a reflective broadband CLC film [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Temperature Self-Adaptive and Color-Adjustable Smart Window Based on Templated Cholesteric Liquid Crystals

Sun,

2023

Polymers

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Cholesteric liquid crystals (CLCs) exhibit selective reflection due to their self-assembled helical superstructures. Reconfigurable templates can achieve integration functions via inducing processes of molecular assemblies. Here we demonstrate temperature self-adaptive and color-adjustable smart windows using CLCs, which are fabricated via the templating method and exhibit simultaneous reflections in the visible and infrared spectra. Reflection bands formed by the refilled CLC materials can be adjusted reversibly both upon thermal and electrical actuation. In CLC with adjustable reflection in the infrared, the central wavelength of the infrared reflection band can be adjusted from 950 nm to 1305 nm via temperature, and from 1150 nm to 950 nm via electric field. A temperature variation of 10.3 °C within 55 s was induced by the single-layer templated CLC cell, and a comfortable temperature range could be effectively maintained by the CLC cell in a varied environment. In CLC with dynamic color in the visible spectrum, color shifts from 530 nm to 650 nm tuned by temperature and from 530 nm to 440 nm adjusted by electric field were obtained. Temperature-responsive reflection in the infrared spectrum contributes to automatic thermal management, and electric-field-induced band shift in the visible spectrum enables active dynamic color adjustment. The presented templated CLC smart windows show considerable potential in energy conservation and biological clock regulation fields.

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Section: Introductionmentioning

confidence: 99%

Temperature Self-Adaptive and Color-Adjustable Smart Window Based on Templated Cholesteric Liquid Crystals

Sun,

2023

Polymers

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Low-voltage electrochromic behaviour of polymer-stabilised liquid crystal with considerable broadband reflection

Lin,

Zhao,

et al. 2024

Liquid Crystals

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Broadband reflection and infrared shielding characterisation of cholesteric liquid crystals doped with UV–absorbing layer

Zhong,

Zhao,

et al. 2024

Liquid Crystals

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Research of nanofibres loaded with ultraviolet absorber to increase the wavewidth of cholesteric liquid crystals

Cited by 3 publications

References 31 publications

Temperature Self-Adaptive and Color-Adjustable Smart Window Based on Templated Cholesteric Liquid Crystals

Temperature Self-Adaptive and Color-Adjustable Smart Window Based on Templated Cholesteric Liquid Crystals

Low-voltage electrochromic behaviour of polymer-stabilised liquid crystal with considerable broadband reflection

Broadband reflection and infrared shielding characterisation of cholesteric liquid crystals doped with UV–absorbing layer

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