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Polymer Bulletin
Published in: Polymer Bulletin 1/2023

29-01-2022 | Original Paper

Dielectric properties of polymer-dispersed antiferroelectric liquid crystals influenced by flexoelectric polarization

Author: Tapas Pal Majumder

Published in: Polymer Bulletin | Issue 1/2023

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Abstract

Dielectric spectrum of polymer-dispersed antiferroelectric liquid crystals (PDAFLC) was studied theoretically by considering the influence of flexoelectric polarization. Such flexoelectric polarization arose due to mechanical distortion as a whole and contributed a direct dependence on the bulk free energy with the free volume interactions, bulk anchoring strength of the in-layer molecular director and polymeric cross-link. The behaviour of both the low-frequency in-phase mode and the high-frequency anti-phase mode depending on the variation of flexoelectric polarization in PDAFLC was studied in detail theoretically. The dielectric permittivity and the dielectric strength were affected strongly because of the co-operative motion of the molecules and the polymeric cross-links for both occasions. The variation of relaxation times and unwinding critical field of both phases with the variation of flexoelectric polarization and interlayer interaction strength was studied in detail.

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Metadata
Title
Dielectric properties of polymer-dispersed antiferroelectric liquid crystals influenced by flexoelectric polarization
Author
Tapas Pal Majumder
Publication date
29-01-2022
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 1/2023
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-021-04024-x

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