Competition of lattice and basis for alignment of nematic liquid crystals

DEBENEDICTIS, Andrew, ATHERTON, Timothy J., ANQUETIL-DECK, Candy, CLEAVER, Doug, EMERSON, David B., WOLAK, Matthew and ADLER, James H. (2015). Competition of lattice and basis for alignment of nematic liquid crystals. Physical Review E (PRE), 92 (4), 042501.

[img]
Preview
PDF
LClatticebasisDraftRevised_v2.pdf - Accepted Version
All rights reserved.

Download (9MB) | Preview
[img] PDF (Acceptance email)
Cleaver 10940.pdf
Restricted to Repository staff only

Download (110kB)
Official URL: http://journals.aps.org/pre/pdf/10.1103/PhysRevE.9...
Link to published version:: https://doi.org/10.1103/PhysRevE.92.042501
Related URLs:

    Abstract

    Due to elastic anisotropy, two-dimensional patterning of substrates can promote weak azimuthal alignment of adjacent nematic liquid crystals. Here we consider how such alignment can be achieved using a periodic square lattice of circular or elliptical motifs. In particular, we examine ways in which the lattice and motif can combine to favor differing orientations. Using Monte Carlo simulation and continuum elasticity we find, for circular motifs, that the coverage fraction controls both the polar anchoring angle and a transition in the azimuthal orientation. If the circles are generalized to ellipses, arbitrary control of the effective easy axis and effective anchoring potential becomes achievable by appropriate tuning of the ellipse motif relative to the periodic lattice patterning. This has possible applications in both monostable and bistable liquid crystal device contexts.

    Item Type: Article
    Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Polymers Nanocomposites and Modelling Research Centre > Materials and Fluid Flow Modelling Group
    Identification Number: https://doi.org/10.1103/PhysRevE.92.042501
    Page Range: 042501
    Depositing User: Doug Cleaver
    Date Deposited: 14 Dec 2015 10:35
    Last Modified: 18 Mar 2021 04:52
    URI: http://shura.shu.ac.uk/id/eprint/10940

    Actions (login required)

    View Item View Item

    Downloads

    Downloads per month over past year

    View more statistics