Investigation of electro-optical and dielectric properties of polymer dispersed liquid crystal containing WS2 quantum dots and polyfunctional monomers

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: 425, P. 127165 - 127165

Published: Feb. 15, 2025

Language: Английский

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Simultaneous Light‐Triggered Formation of Polymer Networks and Enhancement of Electrohydrodynamic Instabilities in Liquid Crystals for Versatile Energy‐Saving Smart Windows

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 20, 2024

Abstract Smart windows have come to the fore in modern buildings and intelligent information equipment drawing upon their dynamic control over light transmission. Liquid crystals tactfully manipulate transmission depending on microcosmic molecular orientations, emerging as new favorite functional materials for smart windows. However, most liquid crystal window technologies require continuous electricity operation luminous transparency still perform a trade‐off between film formation performance dimming functions. As key components of building structures, shall be kept transparent an extended period. For convenience large‐scale processing, polymer matrices are indispensable. Given that, reverse‐operation‐mode films, which achieve daylighting natural or no power‐input states become opaque block sunlight through electric input demand, highly desired. Here, by introducing photolabile amine, synchronous light‐induced networks enhancement electrohydrodynamic instabilities mesogenic is successfully executed. Relying this creative effective approach, network films having simultaneous modulation capability visible near‐infrared from solar irradiation skillfully fabricated, promising applications versatile energy‐saving

Language: Английский

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Nanoparticles in thermotropic and lyotropic liquid crystals

Frontiers in Soft Matter, Journal Year: 2025, Volume and Issue: 4

Published: Jan. 7, 2025

Over the last few decades many applications of liquid crystals have been developed, including widely employed technology low-power, flat-panel crystal displays (LCDs), but also sensors, photonic devices and other non-display in medicine drug delivery. In recent years, research trends shifted directions. Nanotechnology nanoscience garnered significant attention since various nanomaterials or nanoparticles (NPs) can be added directly to crystalline mesogenic phases. The main idea is modify physical properties increase their functionality through addition nanomaterials, exploit self-assembly spontaneous ordering LCs into structures patterns that templated by dispersed particles. neat doped nanoparticles/nanomaterials exhibit different behaviours when mixed together. influence alignment orientation crystals, interaction with causes changes optical, electrical, mechanical characteristics composite. At same time affect ordering, structuring for example transfer helical order. this review, we discuss effects crystals. Several categories such as metallic, carbon allotropes, nanorod nanowires will introduced, together particles additional functionality, like ferroelectricity, semiconductors quantum dots. combination leads a wide range novel technologies.

Language: Английский

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Impact of Diamond Nanoparticles on the Dielectric and Electro-optical Properties of Nematic Liquid Crystal

Journal of Physics and Chemistry of Solids, Journal Year: 2025, Volume and Issue: unknown, P. 112696 - 112696

Published: March 1, 2025

Language: Английский

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Spectroscopic analysis for environmental sensing of smart polymers

AIP conference proceedings, Journal Year: 2025, Volume and Issue: 3157, P. 120060 - 120060

Published: Jan. 1, 2025

Language: Английский

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Investigation of the effect of doping of newly synthesised bismuth ferrite nanoparticles on the dielectric property of the negative anisotropic nematic liquid crystal

Liquid Crystals, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 10

Published: Feb. 25, 2025

Language: Английский

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Printable Photonic Materials and Devices for Smart Healthcare

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Photonic materials possess tunable optical properties and have been widely utilized for healthcare applications. These enable the detection of physical physiological bio-signals via modulated output characteristics, such as wavelength shifts, fluorescence emission, light scattering. When further synthesized into functional photonic inks, multimodal devices epidermal, minimally invasive, implantable bio-sensing can be constructed in facile printable manners. This review first introduces different geometries their unique properties. To feasible fabrication multi-functional biosensing versatile platforms, synthesis inks as-printed are then illustrated. Subsequently, advances breakthroughs to construct integrated systems wearable applications displayed, especially sensing facilitate personalized remote healthcare. Finally, challenges achieving mechanical stability, eliminated degradation, enhanced biocompatibility dynamic biological environments, scalable production discussed, along with prospects toward reliable intelligent

Language: Английский

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Analysis of electro-optical properties of surfactant doped polymer dispersed liquid crystal

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

The narrow working temperature range is one of the significant factors limiting wide applications polymer dispersed liquid crystal (PDLC). In this paper, we have prepared a surfactant (Span-80) doped PDLC. different concentration Span-80 has impact on electro-optical properties PDLC at temperatures. Based experimental results that doping can reduce driving voltage and shorten recovery time low temperatures, ball lubrication model been proposed. from ideal are consistent with results.

Language: Английский

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Dispersion of Multiferroic Nanoparticles in a Bent-Core Nematic Liquid Crystal: Experimental and Theoretical Study

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 127624 - 127624

Published: April 1, 2025

Language: Английский

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Effect of High-Index Nanoparticles on the Emission Properties of a Dye-Doped Blue Phase Liquid Crystal

Chemistry of Materials, Journal Year: 2024, Volume and Issue: 36(9), P. 4726 - 4735

Published: April 17, 2024

This study demonstrates a significant advancement in enhancing photoluminescence (PL) intensity by the inclusion of high-index dielectric nanoparticles into dye-doped blue phase liquid crystal (BPLC). The I (BPI), cubic subphase exhibited highly chiral crystals, is inherently an incomplete photonic band gap (PBG) system due to low refractive index contrast Δn (<0.1). given difference between indices corresponding double twisted cylinders and disclination lines that constitute phases. Being PBG system, BPI exhibits narrow width (2 3%), affecting extent enhancement PL BPLC. An elegant pathway confining high-refractive selenium (n = 3.07 at optical frequencies) inside core effectively increases (1.4) thus (6%), driving toward complete PBG. This, turn, enhances factor 3 when compared pristine BPLC, as demonstrated finite element method simulations reflection spectroscopy experiments. reveal efficient confinement electromagnetic waves leads increased density states (DOS) edges, hence, enhanced emission. However, emission gets suppressed DOS nearly zero gap. situ modulation experimentally established utilizing thermally induced tunability. Simulations also suggest strongly depends on orientation position dipole (dye) within cavity. Thus, incorporating BPLC intensity, rendering more conducive for various optoelectronic applications such light-emitting diodes light-emissive displays.

Language: Английский

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