Fabrication of a dye-doped liquid crystal light shutter by thermal curing of polymer

Yu, Byeong-Hun; Ji, Seong-Min; Kim, Jin-Hun; Huh, Jae Won; Yoon, Tae–Hoon

doi:10.1016/j.optmat.2017.04.029

Cited by 16 publications

(4 citation statements)

References 28 publications

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“…In addition, a dye-doped PSLC light shutter has been demonstrated to change from a clear to an opaque state due to dye adsorption, making it a good candidate in see-through displays. 7,8 …”

Section: Introductionmentioning

confidence: 99%

Multifunctional sensors based on liquid crystals scaffolded in nematic polymer networks

2021

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“…In addition, a dye-doped PSLC light shutter has been demonstrated to change from a clear to an opaque state due to dye adsorption, making it a good candidate in see-through displays. 7,8 …”

Section: Introductionmentioning

confidence: 99%

Multifunctional sensors based on liquid crystals scaffolded in nematic polymer networks

2021

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“…The resulting LC or polymerized reactive mesogens lms may serve in various applications, such as spatial geometric phase modulators or polarization holograms 8 , since the alignment layer provides precise control of 2D and 3D molecular orientation in LC cells 9 . Adding dichroic dyes or uorescent dyes to the LC broadens the application range 4,[10][11][12][13] .…”

Section: Introductionmentioning

confidence: 99%

Generation of Arbitrarily Patterned Polarizers Using 2-Photon Polymerization

Ganazhapa,

Pereiro-García,

Arregui

et al. 2024

Preprint

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Patterned polarizers are prepared using liquid crystals (LC) doped with a black dichroic dye and in combination with a linear polarizer. The pattern is achieved with a nanostructured LC alignment surface, that is generated using a two-photon polymerization direct laser write (2PP-DLW). This technique creates a pattern of high-resolution grooves in the photoresist at any arbitrary angle. The angle governs the LC orientation at any substrate surface point, determining the transmitted light linear polarization angle. This paper presents the first use of a 2PP-DLW cured positive tone photoresist for dichroic dye-doped LC alignment. Two complementary photoresists have been employed: conventional negative tone SU-8 photoresist and, in this context novel, positive tone S1805 photoresist. The alignment quality of the polarizers has been assessed by analyzing the transmission using an additional polarizer. For SU-8, the resulting grayscale pattern and a contrast ratio (CR) of 14 has measured. The uniformity of the alignment has been measured to be 65% using normalized Shannon entropy (H). For S1805, a CR of 37 was measured, and a uniformity of 63% was obtained. 2PP-DLW allows for shaping complex patterns in submicron dimensions and for the fabrication of arbitrarily patterned polarizers and other LC devices.

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“…There are four types of flexible dimming smart window technologies which have been applied to passenger car's sunroof, to control its light transmittance from transparent to opaque status, to block extra heat from the sun, and give privacy with its light block-out function [1] . They are flexible polymer dispersed liquid crystals (PDLC) devices, suspended particle devices (SPD), electrochromic devices (ECD) and flexible dye liquid crystal (FDLC) devices.…”

Section: Introductionmentioning

confidence: 99%

84‐2: Flexible Dye Liquid Crystal Dimming Film for Smart Window

Chen,

Wang,

Wang

et al. 2023

Symp Digest of Tech Papers

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Windows are important elements in the passenger cars that have a large impact on the light shading and heat insulation, affecting heating and lighting and interior space requirements in the cars. Flexible smart window plays an important role in human comfort and experience. In this review, we will discuss the next generation smart windows based on flexible dimming film and dye liquid crystal technology which can realized a step‐less dimming result through voltage switching, in such a way that comfortable lighting and temperatures in the car can be maintained.

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Fabrication of a dye-doped liquid crystal light shutter by thermal curing of polymer

Cited by 16 publications

References 28 publications

Multifunctional sensors based on liquid crystals scaffolded in nematic polymer networks

Multifunctional sensors based on liquid crystals scaffolded in nematic polymer networks

Generation of Arbitrarily Patterned Polarizers Using 2-Photon Polymerization

84‐2: Flexible Dye Liquid Crystal Dimming Film for Smart Window

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