CUED Publications database

Curvature generation in nematic surfaces.

Mostajeran, C (2015) Curvature generation in nematic surfaces. Phys Rev E Stat Nonlin Soft Matter Phys, 91. 062405-. ISSN 1539-3755

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Abstract

In recent years there has been a growing interest in the study of shape formation using modern responsive materials that can be preprogrammed to undergo spatially inhomogeneous local deformations. In particular, nematic liquid crystalline solids offer exciting possibilities in this context. Considerable recent progress has been made in achieving a variety of shape transitions in thin sheets of nematic solids by engineering isolated points of concentrated Gaussian curvature using topological defects in the nematic director field across textured surfaces. In this paper, we consider ways of achieving shape transitions in thin sheets of nematic glass by generation of nonlocalized Gaussian curvature in the absence of topological defects in the director field. We show how one can blueprint any desired Gaussian curvature in a thin nematic sheet by controlling the nematic alignment angle across the surface and highlight specific patterns which present feasible initial targets for experimental verification of the theory.

Item Type: Article
Uncontrolled Keywords: Liquid Crystals Mechanical Phenomena Models, Theoretical Surface Properties
Subjects: UNSPECIFIED
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 09 May 2018 20:10
Last Modified: 19 Nov 2019 01:38
DOI: 10.1103/PhysRevE.91.062405