Deformation of nematic liquid crystals in an electric field

RH Self, CP Please, TJ Sluckin - European Journal of Applied …, 2002 - cambridge.org
The behaviour of liquid crystal materials used in display devices is discussed. The
underlying continuum theory developed by Frank, Ericksen and Leslie for describing this …

Sliding planar anchoring and viscous surface torque in a cholesteric liquid crystal

P Oswald, A Dequidt, A Żywociński - … Review E—Statistical, Nonlinear, and Soft …, 2008 - APS
We propose a surface treatment allowing one to obtain a sliding planar anchoring of nematic
(or cholesteric) liquid crystals. It consists of depositing a thin layer of the polymercaptan …

Aging of surface anchoring and surface viscosity of a nematic liquid crystal on photoaligning poly-(vinyl-cinnamate)

M Vilfan, ID Olenik, A Mertelj, M Čopič - Physical Review E, 2001 - APS
Dynamic light scattering was used to measure the azimuthal anchoring energy coefficient W
φ of nematic liquid crystal (5CB) on photoaligning poly-(vinyl-cinnamate) layer …

Experimental relationship between surface and bulk rotational viscosities in nematic liquid crystals

P Oswald, G Poy, F Vittoz, V Popa-Nita - Liquid Crystals, 2013 - Taylor & Francis
Systematic measurements of the surface viscosity of several nematic liquid crystals in
contact with a polymercaptan layer show that the latter scales like the bulk rotational …

Measurement with a rotating magnetic field of the surface viscosity of a nematic liquid crystal

P Oswald - Europhysics Letters, 2012 - iopscience.iop.org
Measurement with a rotating magnetic field of the surface viscosity of a nematic liquid crystal -
IOPscience Skip to content IOP Science home Accessibility Help Search Journals Journals list …

Dynamics of order reconstruction in nanoconfined twisted nematic cells with a topological defect

X Zhou, Z Zhang - Liquid Crystals, 2014 - Taylor & Francis
Within the Landau-de Gennes theory, we have investigated the dynamics of s=±1/2 twist
disclinations in a twisted nematic cell, using the two-dimensional finite-difference iterative …

Surface viscosity in nematic liquid crystals

G Barbero, L Pandolfi - Physical Review E—Statistical, Nonlinear, and Soft …, 2009 - APS
We consider the effect of a localized surface viscosity on the relaxation of an imposed
deformation in nematic liquid crystal cells. The simple case in which the samples are in the …

Continuum description of the interfacial layer of nematic liquid crystals in contact with solid surfaces

G Barbero, I Dahl, L Komitov - The Journal of chemical physics, 2009 - pubs.aip.org
We investigate when it is possible to introduce surface physical parameters characterizing
the nematic/substrate interface. The analysis is performed by solving the problem assuming …

Anchoring of nematic liquid crystals on a thin polymeric film

AL Alexe-Ionescu, G Barbero, L Komitov - Physical Review E—Statistical …, 2008 - APS
We analyze the influence of a thin polymer layer with lateral side groups on the anchoring of
a nematic liquid crystal. We show that the effective anisotropic part of the anchoring energy …

Importance of the surface viscosity on the relaxation of an imposed deformation in a nematic liquid crystal cell

G Barbero, EK Lenzi - Physics Letters A, 2010 - Elsevier
We analyze the influence of the surface viscosity on the relaxation of the nematic
deformation induced by an external field on a nematic cell, when the distorting field is …