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.

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:
Link to published version::


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 > Modelling Research Centre > Materials Modelling group
Identification Number:
Page Range: 042501
Depositing User: Doug Cleaver
Date Deposited: 14 Dec 2015 10:35
Last Modified: 18 Mar 2021 04:52

Actions (login required)

View Item View Item


Downloads per month over past year

View more statistics