Composite thin film nano/microstructure of solution-based metal oxide and UV-curable polymer for liquid crystal display

A nanostructured composite of ultraviolet (UV)-curable polymer and TaO was fabricated by UV imprinting and confirmed by physical and chemical analysis using atomic force microscopy (AFM), X-ray diffraction (XRD), and Fourier-transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). Incr...

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Bibliographic Details
Published in:Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2023-06, Vol.25 (6), p.111, Article 111
Main Authors: Kim, Dong Hyun, Oh, Jin Young, Yang, Da-Bin, Lee, Dong Wook, Won, Jonghoon, In Jang, Jong, Jeong, Hae-Chang, Seo, Dae-Shik
Format: Article
Language:English
Subjects:
Alignment
Atomic force microscopy
Characterization and Evaluation of Materials
Chemical analysis
Chemistry and Materials Science
Composite materials
Fourier transforms
Glass substrates
Heat resistance
Inorganic Chemistry
Lasers
Liquid crystal displays
Materials Science
Metal oxides
Nanoparticles
Nanostructure
Nanotechnology
Optical Devices
Optics
Photoelectron spectroscopy
Photoelectrons
Photonics
Physical Chemistry
Polymers
Research Paper
Thermal resistance
Thin films
Ultraviolet radiation
X ray photoelectron spectroscopy
X-ray diffraction
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Summary:A nanostructured composite of ultraviolet (UV)-curable polymer and TaO was fabricated by UV imprinting and confirmed by physical and chemical analysis using atomic force microscopy (AFM), X-ray diffraction (XRD), and Fourier-transform infrared (FTIR), and X-ray photoelectron spectroscopy (XPS). Increasing the content of UV-curable polymers in the composite can successfully network with TaO and allow transfer. It was confirmed that nanostructured composite films could be successfully deposited on glass substrates depending on the UV-curable polymer content. AFM images with cross-sectional line profiles of 20 wt% composite films demonstrate that nanostructures can be successfully transferred. A uniform alignment was achieved with a stable pretilt angle on the transferred nanostructures. In addition, remarkably high-thermal budgets were observed due to the heat resistance of the films and nanostructures. Also, better C-V characteristics were observed compared to the rubbed polyimide liquid crystal (LC) cell. Therefore, nanostructured composites containing metal oxides and UV-curable polymers have great potential for LC devices considering their flexibility and sensitivity to heat such as rolling capability. This film can be used as an LC alignment layer with strong potential for high-quality LC applications.
ISSN:1388-0764
1572-896X
DOI:10.1007/s11051-023-05760-z