1. RRI Digital Repository
  2. 06. Soft Condensed Matter
  3. Research Papers (SCM)
Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/7550
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMadhusudana, N.V.-
dc.date.accessioned2020-10-12T04:26:18Z-
dc.date.available2020-10-12T04:26:18Z-
dc.date.issued2020-09-
dc.identifier.citationPhysical Review E, 2020, Vol.102, Article No.032701en_US
dc.identifier.issn2470-0045-
dc.identifier.issn2470-0053 (Online)-
dc.identifier.urihttp://hdl.handle.net/2289/7550-
dc.descriptionOpen Access.en_US
dc.description.abstractSmectic liquid crystals with a layering order of rodlike molecules can be drawn in the form of free standing films across holes. Extensive experimental studies have shown that smectic-C (SmC) liquid crystals (LCs) with tilted molecules form periodic stripes in the thinner parts of the meniscus, which persist over a range of temperatures above the transition of the bulk medium to the SmA phase in which the tilt angle is zero. The prevailing theoretical models cannot account for all the experimental observations. We propose a model in which we argue that the negative curvature of the surface of the meniscus results in an energy cost when the molecules tilt at the surface. The energy can be reduced by exploiting the allowed (∇ .k )(∇ .c ) deformation which couples the divergence of k, the unit vector along the layer normal, with that of c, the projection of the tilted molecular director on the layer plane. We propose a structure with periodic bending of layers with opposite curvatures, in which the c-vector field itself has a continuous deformation. Calculations based on the theoretical model can qualitatively account for all the experimental observations. It is suggested that detailed measurements on the stripes may be useful for getting good estimates of a few curvature elastic constants of SmC LCs.en_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.urihttps://ui.adsabs.harvard.edu/abs/2020PhRvE.102c2701M/abstracten_US
dc.relation.urihttps://doi.org/10.1103/PhysRevE.102.032701en_US
dc.rights2020 American Physical Societyen_US
dc.titleCurvature elasticity of smectic-C liquid crystals and formation of stripe domains along thickness gradients in menisci of free-standing filmsen_US
dc.typeArticleen_US
Appears in Collections:Research Papers (SCM)

Files in This Item:
File Description SizeFormat 
2020_PhysRevE_Vol.102_Article No.032701.pdfOpen Access516.35 kBAdobe PDFView/Open
Show simple item record


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