Field induced Optical anisotropy of Nematic Liquid Crystals from Image analysis


Authors : G.V.Vijaya bhaskara rao, T.Subbarao, Sk. Suriya shihab, K.Mallika

Volume/Issue : Volume 5 - 2020, Issue 2 - February

Google Scholar : https://goo.gl/DF9R4u

Scribd : https://bit.ly/33cqbtC

This paper presents the investigation on Electric field induced optical anisotropy of the planar alignment of nematic liquid crystals: 4-n alkyl benzoic acids ( nBA, where n = 6,7,8) towards the electro optic device applications. Analysis of microscopic textures of liquid crystals under the application of DC electric field is used for this investigation. It includes the computation of optical anisotropic properties from the textures of samples. As a function DC applied field, textures of the samples in the mesophase region of constant temperature are recorded in three monochromatic image planes. Optical anisotropic properties: Normalized transmittance, Absorption coefficient, Birefringence, Kerr constant and Figure of Merit are computed from the intensities of liquid crystal textures using MATLAB software. Results obtained from this investigation shows that Nematic liquid crystal: heptyl benzoic acid (nBA where n= 7) has high value of birefringence, Kerr constant, FOM and is more suitable material for the various electro optic device applications.

Keywords : Optical Anisotropy, Nematic Liquid Crystals, Image Analysis, Fredericksz Transition And Birefringence.

CALL FOR PAPERS


Paper Submission Last Date
31 - May - 2022

Paper Review Notification
In 1-2 Days

Paper Publishing
In 2-3 Days

Never miss an update from Papermashup

Get notified about the latest tutorials and downloads.

Subscribe by Email

Get alerts directly into your inbox after each post and stay updated.
Subscribe
OR

Subscribe by RSS

Add our RSS to your feedreader to get regular updates from us.
Subscribe