Dielectric reorientation and electrohydrodynamic instabilities in dichroic-dye-doped dual-cell liquid crystal smart window

Zhou, Bojun; Che, Chuncheng; Li, Yue; Wang, Chunlei; Wu, Yifan; Chang, Wenbo; Xiao, Yuelei; Cao, Xue; Gong, Lin; Song, Xuechao; Zhou, Yi

doi:10.1080/02678292.2021.1945692

Cited by 5 publications

(1 citation statement)

References 28 publications

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“…The EHDI smart window based on the zwitterions maintains excellent performance even under conditions of continuous power application (Figure 5d) and tens of thousands of ON/OFF switching modes (Figure 5e). In the presence of dichroic dyes, EHDI smart windows can also be used to achieve a colored scattering state characterized by enhanced contrast [39]. The simple mechanism of action of the EHDI smart windows helps achieve design and control flexibility (such as remote control via light) [40].…”

Section: Electrohydrodynamic Instability Of Liquid Crystals (Ehdi)mentioning

confidence: 99%

Reverse Mode Polymer Dispersed Liquid Crystal-based Smart Windows: A Progress Report

Zhang¹,

Chen²,

Hu³

et al. 2021

RPM

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The reverse mode polymer dispersed liquid crystal (PDLC) is an emerging smart window technology. Unlike traditional PDLCs, a reverse mode PDLC can be transparent and opaque in the absence and presence of an external electric field. This report provides a brief introduction to several reverse modes PDLC smart window technologies, focusing on polymer-stabilized liquid crystals (PSLCs). The systems based on electrohydrodynamic instability (EHDI) of liquid crystals have also been discussed. The working principles, mode of material design, and recent developments are presented for each technology. The current obstacles have also been pointed out. The prospects of smart windows have also been presented.

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Section: Electrohydrodynamic Instability Of Liquid Crystals (Ehdi)mentioning

confidence: 99%

Reverse Mode Polymer Dispersed Liquid Crystal-based Smart Windows: A Progress Report

Zhang¹,

Chen²,

Hu³

et al. 2021

RPM

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Hybrid Active–Passive Control of an Unconventional Smart Window Based on Dye‐Doped Dual‐Frequency Liquid Crystal

Sung,

Lee

2023

Advanced Photonics Research

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The allure of dual‐frequency liquid crystal (DFLC) stems from its unique feature of the switchable and revertible sign of dielectric anisotropy. In addition to the common frequency‐modulation method, this study focuses on manipulating the dielectric anisotropy in DFLC through change in temperature. Herein, the hybrid control of a dichroic‐dye‐doped DFLC smart window is proposed, which offers a passive‐control function by reacting to the temperature and automatically switching to one of the three distinct transmission levels: the transparent, variably gray (tinted or translucent), and opaque states. In contrast to conventional, passively controlled smart windows that typically exhibit a gray or opaque state at high temperatures and become transparent at low temperatures, the suggested smart window thermally operates in the opposite manner, presenting a unique characteristic that holds significant potential for a wide range of applications. This thermally reverse‐mode smart window allows one to actively control the degree of transparency by applied voltage at various frequencies as well. A parameter termed the “crossover temperature” is introduced as an indicator of the potency for the change in dielectric anisotropy of the DFLC by temperature. The operation scheme of the hybrid electrical‐and‐thermal control for the proposed vertically aligned dye‐doped DFLC smart window is summarized.

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Hybrid smart window for visibility control and heat blocking utilizing NMP-LC liquid crystal tunable scattering mode with nanostructured VO2 metasurface

Barinova,

Bhupathi,

Abdulhalim

2024

Applied Surface Science

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Dielectric reorientation and electrohydrodynamic instabilities in dichroic-dye-doped dual-cell liquid crystal smart window

Cited by 5 publications

References 28 publications

Reverse Mode Polymer Dispersed Liquid Crystal-based Smart Windows: A Progress Report

Reverse Mode Polymer Dispersed Liquid Crystal-based Smart Windows: A Progress Report

Hybrid Active–Passive Control of an Unconventional Smart Window Based on Dye‐Doped Dual‐Frequency Liquid Crystal

Hybrid smart window for visibility control and heat blocking utilizing NMP-LC liquid crystal tunable scattering mode with nanostructured VO2 metasurface

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