Title:	Pseudo-polar order in the tilted smectic phases of bent-core hockey stick shaped molecules
Authors:	Malkar, Deepshika Roy, Arun
Keywords:	liquid crystals bent core liquid crystals phase transitions dielectric constant
Issue Date:	25-May-2022
Publisher:	Taylor and Francis
Citation:	Liquid Crystals, 2022, Vol.49, p1147
Abstract:	We discuss the liquid crystal phases of a compound consisting of bent-core hockey-stick-shaped molecules. The compound exhibits two smectic phases with an in-plane pseudo-polar order in addition to the tilt order in the layers. The transverse shape anisotropy and dissimilar arm lengths of these bent-core molecules stabilise these pseudo-polar tilted smectic phases. The higher temperature smectic phase has an anti-clinic organisation of the molecules in successive layers. An intermediate organisation between the synclinic and anti-clinic structures is found in the lower temperature smectic phase. We have developed a simple phenomenological model to account for these phases. In the higher temperature smectic phase, a field-induced Freedericksz type transition is observed beyond a threshold electric field. We also account for this field-induced transition using our theoretical model.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/7982
ISSN:	0267-8292 1366-5855 (Online)
Alternative Location:	https://ui.adsabs.harvard.edu/abs/2016SMat...12.4960M/abstract https://doi.org/10.1080/02678292.2022.2076941
Copyright:	2022 Informa UK Limited, trading as Taylor & Francis Group
Appears in Collections:	Research Papers (SCM)

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