Mesomorphic behaviors of some acrylate liquid crystals and their application for polarizer preparation

Zhang, Xiaoli; Wu, Limin; Chen, Kai; Liu, Wei; Li, Baozong; Li, Yang; Yang, Yonggang

doi:10.1080/02678292.2021.1974586

Cited by 3 publications

(2 citation statements)

References 31 publications

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“…In these applications, the host system also plays a crucial role. Therefore, the dispersion of dyes in different mesophases such as nematic [16][17][18], cholesteric [19,20], ferroelectric [21,22] and smectic [23][24][25] systems have already been tested for different application purposes. Nematic systems are the most fundamental and thoroughly investigated out of all other host mesophases.…”

Section: Introductionmentioning

confidence: 99%

Examining Energy Storage Potential in Weakly Polar Nematic Liquid Crystals Infused with Anthraquinone Dye: A Comprehensive Approach

Singh,

Agarwal,

Hatshan

et al. 2023

J. Compos. Sci.

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The applications of liquid crystals in the field of renewable, clean and sustainable technologies of energy storage are of utmost importance at present. This paper delves into dielectric spectroscopic studies of a weakly polar nematic liquid crystal (NLC) enriched with an anthraquinone dye. The primary objective is to assess the impact of increasing dye concentrations on various properties. Anthraquinone dye has been found to increase the dielectric permittivity of weakly polar NLC, leading to a 4.7-fold increase in dielectric anisotropy. Simultaneously, a reduction of around 11% in threshold and operating voltages of the NLC has also been recorded after using dye as the guest material. The added dipolar contributions provided by dye molecules have been attributed to this surplus permittivity. The NLC has been found to have an approximately 54% faster response to the applied field. The intrinsic polarization field of dye molecules accelerates nearby LC molecule reorientation, leading to a 56.5% faster fall time and a 29.8% faster rise time in a 3.0 wt% dye-doped LC cell. These experimental results have been validated via computational studies as well. The simulation results about dipole moment and polarizability provide robust support for our experimental results. Such composites evince their potential for energy storage and 5G communication technologies with adjustable impedance and permittivity.

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Section: Introductionmentioning

confidence: 99%

Examining Energy Storage Potential in Weakly Polar Nematic Liquid Crystals Infused with Anthraquinone Dye: A Comprehensive Approach

Singh,

Agarwal,

Hatshan

et al. 2023

J. Compos. Sci.

View full text Add to dashboard Cite

show abstract

“…Due to the selective reflection of light by its supramolecular helical structure, CLCs can display various structural colors. , Stable LC networks (LCNs), prepared using reactive nematic LC monomers through photopolymerization, have a wide range of applications, such as LC elastomers, − anticounterfeiting, sensors, flexible photonic devices, , bionic materials, ,, optical communication, data storage, , and soft actuators. , Up to now, the photopolymerization of LC monomers has been achieved primarily by the free-radical polymerization of mono- and di-(meth)acrylate LC mixtures . However, free-radical polymerization has a high shrinkage rate during curing, which affects the quality of coatings.…”

Section: Introductionmentioning

confidence: 99%

Colorfully Patterned Epoxy Resin Films with a Cholesteric Structure Prepared through a Photopolymerization Approach

Zhang

Guo

et al. 2022

ACS Appl. Polym. Mater.

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Structurally colored epoxy resin films were prepared using a liquid crystalline (LC) epoxy monomer of E11M and a chiral additive of CA-iso through a photopolymerization approach. With the addition of the co-photoinitiator isopropyl thioxanthone and comonomer 3′,4′-epoxycyclohexylmethyl 3,4-epoxycyclohexylcarboxylate, the polymerization rate was increased. Since the epoxy resin films can be obtained within several seconds, they are feasible for large-area preparation on the coating line. The reflective wavelength was tunable by changing the concentration of CA-iso in the LC mixture. Diffuse-reflectance circular dichroism spectra indicated a right-handed helical supramolecular structure. Field-emission scanning electron microscopy images indicated a multilayer structure. Since the LC mixtures were thermochromic, colorfully patterned epoxy resin films were prepared by controlling the polymerization temperature. Moreover, LC gratings were also prepared, which were expected to be applied for anticounterfeiting.

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Study on Physical Properties of Liquid Crystal Based FR3 Insulating Oil

Zhao,

Huang,

Chen

et al. 2024

2024 IEEE International Conference on High Voltage Engineering and Applications (ICHVE)

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Mesomorphic behaviors of some acrylate liquid crystals and their application for polarizer preparation

Cited by 3 publications

References 31 publications

Examining Energy Storage Potential in Weakly Polar Nematic Liquid Crystals Infused with Anthraquinone Dye: A Comprehensive Approach

Examining Energy Storage Potential in Weakly Polar Nematic Liquid Crystals Infused with Anthraquinone Dye: A Comprehensive Approach

Colorfully Patterned Epoxy Resin Films with a Cholesteric Structure Prepared through a Photopolymerization Approach

Study on Physical Properties of Liquid Crystal Based FR3 Insulating Oil

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