Exploring Liquid Crystal Texture Analysis Through Linear Dichroism

Linear dichroism is a novel method for texture analysis and is used to measure the order parameter of liquid crystals. It determines the dichroic ratio by analyzing the maximum absorption of textural intensities polarized parallel and perpendicular to the optical axis. To capture liquid crystal text...

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Bibliographic Details
Published inBrazilian journal of physics Vol. 54; no. 4
Main Authors G.V., Vijaya Bhaskara Rao, U., Mahesh Kumar, L.N.V.H., Soma Sundar, K., Lakshmi Sarada, J., Vijay Kumar, A., GuruSampath Kumar, G., Venkata Ramana, Bitra, Hema Chandra Rao, L., Obulapathi, Li, Xuejin
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2024
Springer Nature B.V
Subjects
Benzoic acid
Bouguer law
Dichroism
Liquid crystals
Nematic crystals
Optical microscopes
Order parameters
Physical properties
Physics
Physics and Astronomy
Texture
Texture analysis
Absorption
Dichroic ratio
Order parameter
Liquid crystals
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Summary:Linear dichroism is a novel method for texture analysis and is used to measure the order parameter of liquid crystals. It determines the dichroic ratio by analyzing the maximum absorption of textural intensities polarized parallel and perpendicular to the optical axis. To capture liquid crystal textures as a function of temperature, a polarized optical microscope with an attached camera is employed under parallel and crossed polarizer conditions. This analysis adheres to the Beer-Lambert law, relating transmitted and absorbed textural intensities in liquid crystals. Here, we investigate nematic liquid crystals, specifically 4-cyano-4′-pentylbiphenyl and p-n-alkyl benzoic acid (where n  = 8), using texture analysis to study their physical characteristics.
ISSN:0103-9733
1678-4448
DOI:10.1007/s13538-024-01497-9