Porous carbon nanoparticles dispersed nematic liquid crystal: influence of the particle size on electro-optical and dielectric parameters
- Title
- Porous carbon nanoparticles dispersed nematic liquid crystal: influence of the particle size on electro-optical and dielectric parameters
- Creator
- Pathak G.; Hegde R.S.; Punjalkatte S.S.; Rujiralai T.; Hegde G.; Prasad V.
- Description
- Porous carbon nanoparticles (PCNPs) of four different sizes (~180nm, ~51nm, ~41 and ~25nm) were dispersed into a nematic liquid crystal (NLC) in 0.25wt% concentration. PCNPs were derived from biowaste materials and pyrolysed at elevated temperatures to get the porous structure. Polarising optical microscopic observations were carried out in dark and bright states on both the pure NLC as well as NLC-PCNPs composites. Homogeneous alignment was well maintained in all the composites except the one with the highest sized (~180nm) PCNPs. Birefringence, relative permittivity and dielectric anisotropy, increases as the size of the PCNPs is decreased in the composites. The threshold voltage was also found to decrease with the decrease in the size of the PCNPs. Such investigations may be useful for the fabrication of display devices such as flat panel displays (FPDs) and phase shifters. 2021 Informa UK Limited, trading as Taylor & Francis Group.
- Source
- Liquid Crystals, Vol-49, No. 45907, pp. 1223-1234.
- Date
- 2022-01-01
- Publisher
- Taylor and Francis Ltd.
- Subject
- birefringence; composite; dielectric anisotropy; electro-optical; nematic liquid crystal; Porous carbon nanoparticles
- Coverage
- Pathak G., Centre for Nano and Soft Matter Sciences, Bengaluru, India; Hegde R.S., Centre for Nano and Soft Matter Sciences, Bengaluru, India; Punjalkatte S.S., Centre for Nano-materials & Displays, B.m.s. College of Engineering, Bengaluru, India; Rujiralai T., Centre of Excellence for Innovation in Chemistry and Division of Physical Science, Faculty of Science, Prince of Songkla University, Songkla, Hat Yai, Thailand; Hegde G., Department of Chemistry, CHRIST (Deemed to be University), Hosur Rd, Karnataka, Bengaluru, 560029, India; Prasad V., Centre for Nano and Soft Matter Sciences, Bengaluru, India
- Rights
- Restricted Access
- Relation
- ISSN: 2678292; CODEN: LICRE
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Pathak G.; Hegde R.S.; Punjalkatte S.S.; Rujiralai T.; Hegde G.; Prasad V., “Porous carbon nanoparticles dispersed nematic liquid crystal: influence of the particle size on electro-optical and dielectric parameters,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/15504.