Dye-dependent studies on droplet pattern and electro-optic behaviour of polymer dispersed liquid crystal

Kumar, Pankaj; Sharma, Vandna; Jaggi, Chinky; Raina, K. K.

doi:10.1080/02678292.2016.1240834

Cited by 40 publications

(13 citation statements)

References 70 publications

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“…In this equation, r is the core size of the LC-Ms, and δ, ε, K and l are the constants describing conductivity, dielectric anisotropy, elastic force and shape anisotropy, respectively. [96][97] Obviously, the Eth shows a negative correlation with the core size. Sheng et al fabricated a series of LC-Ms with different core sizes and shell thicknesses, and compared the practical Eth with the theoretical calculation.…”

Section: Performance Optimizationmentioning

confidence: 99%

Development in liquid crystal microcapsules: fabrication, optimization and applications

George

2022

J. Mater. Chem. C

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Section: Performance Optimizationmentioning

confidence: 99%

Development in liquid crystal microcapsules: fabrication, optimization and applications

George

2022

J. Mater. Chem. C

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“…In dye-doped PDLCs (D-PDLCs), dye molecules were found to increase light absorption and decrease the power necessary for the optic effect [ 87 ]. D-PDLCs have been studied extensively by several groups, and it has been found that a strong microscopic mutual interaction among the dye and LC molecules influenced the LC refractive index, dielectric constant, orientational order and phase transition temperature [ 88 , 89 , 90 , 91 , 92 ]. E-O properties of the films were significantly improved by doping dyes due to their contribution to modifying the morphology of the PDLCs [ 93 , 94 , 95 , 96 ].…”

Section: Preparation Of Dye-doped Pdlc Composite Filmmentioning

confidence: 99%

Recent Advances in The Polymer Dispersed Liquid Crystal Composite and Its Applications

et al. 2020

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Polymer dispersed liquid crystals (PDLCs) have kindled a spark of interest because of their unique characteristic of electrically controlled switching. However, some issues including high operating voltage, low contrast ratio and poor mechanical properties are hindering their practical applications. To overcome these drawbacks, some measures were taken such as molecular structure optimization of the monomers and liquid crystals, modification of PDLC and doping of nanoparticles and dyes. This review aims at detailing the recent advances in the process, preparations and applications of PDLCs over the past six years.

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“…In our recent reported work, the dopants such as carbon nanotube, azo and anthra dyes are employed to enhance the EO properties of normal mode PDLCs . These dyes have good optical and alignment properties as well as high solubility in LC hosts, which resulted in LC devices of higher CRs with reduced applied fields.…”

Section: Introductionmentioning

confidence: 99%

Preparation and electrooptic study of reverse mode polymer dispersed liquid crystal: Performance augmentation with the doping of nanoparticles and dichroic dye

Sharma

Kumar

Chinky

et al. 2019

J of Applied Polymer Sci

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Reported herein, the preparation, morphological, and electrooptic (EO) characterization of reverse mode polymer dispersed liquid crystals (PDLCs) with nematic liquid crystal (LC) and UV curable polymer optical adhesive using polymerization induced phase separation method. The PDLCs are switchable between transparent and opaque states due to the homeotropic and planar alignment of LC in their OFF and ON states of applied voltage, respectively. Further, effect of doping of a fixed concentration of azo dye and silica nanoparticles (NPs) on morphological, EO and response characteristics of same PDLC sample was also analyzed. Experimental results showed that doped reverse mode PDLCs have the higher OFF state optical transmission and boost up in the scattering ON state compared with pristine reverse mode PDLC. The phenomenon is also supported by extinction coefficient and absorption study based on Beer's law. The threshold and operating voltages were found reduced ~1.56 and ~1.73 times for NPs and (NPs + dye) doped reverse mode PDLCs, respectively, along with better contrasts to the pristine reverse mode PDLC. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48745.

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Dye-dependent studies on droplet pattern and electro-optic behaviour of polymer dispersed liquid crystal

Cited by 40 publications

References 70 publications

Development in liquid crystal microcapsules: fabrication, optimization and applications

Development in liquid crystal microcapsules: fabrication, optimization and applications

Recent Advances in The Polymer Dispersed Liquid Crystal Composite and Its Applications

Preparation and electrooptic study of reverse mode polymer dispersed liquid crystal: Performance augmentation with the doping of nanoparticles and dichroic dye

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