Title:	Leaning induced layer undulated tilted smectic phase of asymmetric bent-core liquid crystals
Authors:	Mishra, Vishnu Deo Srinivasa, H.T. Roy, Arun
Issue Date:	21-Feb-2023
Publisher:	AIP Publishing
Citation:	Journal of Chemical Physics, 2023, Vol.158,p074906
Abstract:	We report the synthesis and experimental studies on the liquid crystalline phase of a homologous series of compounds comprised of strongly asymmetric bent-core banana shaped molecules. Our x-ray diffraction studies clearly indicate that the compounds exhibit a frustrated tilted smectic phase with layer undulated structure. The low value of the dielectric constant as well as switching current measurements indicate the absence of polarization in this layer undulated phase. In spite of the absence of polarization, a planar aligned sample can be transformed irreversibly to a higher birefringent texture on the application of a high electric field. The zero field texture can only be retrieved by heating the sample to the isotropic phase and cooling it subsequently to the mesophase. We propose a double tilted smectic structure having layer undulation to account for the experimental observations with the layer undulation arising due to the leaning of the molecules in the layer.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/8236
Alternative Location:	https://doi.org/10.1063/5.0137990
Copyright:	2023 The Author(s)
Appears in Collections:	Research Papers (SCM)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.