Silver nanoparticles dispersed in nematic liquid crystal: an impact on dielectric and electro-optical parameters

Katiyar, Rohit; Agrahari, Kaushlendra; Pathak, Govind; Vimal, Tripti; Yadav, Geeta; Pandey, Kamal Kumar; Misra, Abhishek Kumar; Srivastava, Atul; Manohar, Rajiv

doi:10.1007/s40094-020-00374-5

Cited by 25 publications

(2 citation statements)

References 29 publications

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“…All of the current findings suggested that Ag NPs doping can increase the electro-optical performance of PSLC devices, which will widen their applicability, particularly when rapid switching devices like adaptive optics components are considered. An alteration in photoluminescence was observed after doping with Ag NPs as reported by Katiyar et al [21], which indicated that the intensity of photoluminescence varied between composites and pure n-octyloxycyanobiphenyl. However, the addition of silver nanoparticles leads to a reduction in the photoluminescence intensity of pure liquid crystal.…”

Section: Doping Of Various Nanoparticles In Liquid Crystalssupporting

confidence: 62%

Enhancing Liquid Crystal Properties through Nanoparticle Doping: A Mini Review

Kashyap,

Saini,

Rastogi

2024

ajc

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Liquid crystals doped with nanoscale particles have recently acquired popularity, improving their capabilities and applications. The impact of doping metallic and metal-oxide nanoparticles as well as other nanoparticles in liquid crystals is presented in this brief review. Silver nanoparticles (Ag NPs) have an effect on phase transitions, molecular alignment and electrical properties such as threshold voltage and response time. The optical tilt and electro-optical characteristics of gold nanoparticles (Au NPs) are improved. Metal-oxide nanoparticles such as MgO, ZnO, Al2O3, CuO and SiO2 enhance dielectric properties, mitigate screening effects, increase birefringence, and reduce light leakage. Doping carbon nanotubes (CNTs) influences impedance, optical transmittance and electro-optical properties. The review aims to study the effects of nanoparticle doping on liquid crystal features such as phase transitions, molecular alignment, electrical and optical properties, dielectric behavior, and impedance. A better understanding of these modifications can lead to more applications for liquid crystal in areas such as sensors, displays, optoelectronics, and photovoltaics.

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Section: Doping Of Various Nanoparticles In Liquid Crystalssupporting

confidence: 62%

Enhancing Liquid Crystal Properties through Nanoparticle Doping: A Mini Review

Kashyap,

Saini,

Rastogi

2024

ajc

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“…al. reported hexanethiol-capped Silver nanoparticles dispersed in 4′-(Octyloxy)-4biphenylcarbonitrile (a nematic liquid crystal) exhibiting Ag NPs-assisted induced charge transfer by the composite [8]. A good number of works on nanocomposites of Au NP doped mesogen have been reported [9,10,11,12] with efficient enhancement of the material property of the composite.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of mesogen-nanoparticle composites by doping 4-decyloxybenzoic acid with substrate-functionalized ZnO nanoparticle

Paul

Chakraborty

Deb

et al. 2023

CST

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Nanomaterials and Mesogenic materials are two important pillars of today’s science and technology, in the fields of both material and biological applications. Mesogens or liquid crystals (LC) are self-aggregated anisotropic fluids with long range order, and the nature of self-aggregation largely controls their physical and material properties. Doping of nanomaterials over liquid crystalline matrix can provide valuable tools for development of materials with new or improved properties. In the present work 4-decyloxybenzoic acid is taken as the mesogenic matrix. It is observed that, composite prepared by doping of 4-decyloxybenzoic acid mesogen matrix by ZnO nanoparticle pre-functionalized with the same mesogen, caused a marked alteration in the mesogenic behavior. With 3% doping of matrix pre-functionalized ZnO NP on 4- decyloxy benzoic acid, we could achieve a shift of about 31ºC in the N-Iso transition temperature and, a decrease of >10ºC for the onset of liquid crystallinity by this method without quenching any of the mesophases exhibited by the pure mesogen. The synthesized materials have been characterized by variable temperature Polarised optical microscopy (POM), DSC, FTIR, XRD, EDX, and TEM This process may be considered for preparation other nanoparticle-mesogen composites as well. It was observed that, the effect of doping on the transition temperature and enthalpy of 4-Decyloxybenzoic Acid can be significantly enhanced by pre-functionalizing the dopant (ZnO NP) with the substrate molecules and then mixing this substrate functionalized ZnO nanoparticle with the bulk substrate.

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Influence of carbon quantum dots on electro–optical performance of nematic liquid crystal

Eskalen

2020

Appl. Phys. A

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Silver nanoparticles dispersed in nematic liquid crystal: an impact on dielectric and electro-optical parameters

Cited by 25 publications

References 29 publications

Enhancing Liquid Crystal Properties through Nanoparticle Doping: A Mini Review

Enhancing Liquid Crystal Properties through Nanoparticle Doping: A Mini Review

Synthesis of mesogen-nanoparticle composites by doping 4-decyloxybenzoic acid with substrate-functionalized ZnO nanoparticle

Influence of carbon quantum dots on electro–optical performance of nematic liquid crystal

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