Dry-friction and critical state in lyotropic nematic liquid crystals in a magnetic field

EA de Oliveira, G Barbero, AMF Neto, AK Zvezdin - Physics Letters A, 1996 - Elsevier
The surface properties of planarly oriented lyotropic nematic liquid crystals are theoretically
described by means of a model based on the dry-friction like interaction among the nematic …

[引用][C] Pre-and post-transitional effects on the surface tension of nematic liquid crystals

CA Croxton - Physics Letters A, 1979 - Elsevier
X p(2)(zl , r~2ê1 ~)nd3ê1 d3ê2d3r12 , Page 1 Volume 72A, number 2 PHYSICS LETTERS 25
June 1979 PRE- AND POST-TRANSITIONAL EFFECTS ON THE SURFACE TENSION OF …

Surface breaking in lyotropic nematic liquid crystals induced by a magnetic field

AL Alexe-Ionescu, LM Vega, JJ Bonvent, EA Oliveira - Physical Review E, 1999 - APS
The twist deformation induced by a magnetic field H in a lyotropic liquid crystal is analyzed.
Our results show the existence of three regimes for the surface deformation related to two …

Response of nematic liquid crystals to van der Waals forces

ER Smith, BW Ninham - Physica, 1973 - Elsevier
The response of a slab of nematic liquid crystal to the Van der Waals forces exerted upon it
by an anisotropic crystal is studied. The slab of liquid crystal is considered as having its …

Dynamical behavior of a nematic lyotropic liquid crystal in flat confined samples

IH Bechtold, JJ Bonvent, EA Oliveira - Physical Review E, 2001 - APS
We investigate the dynamical behavior of the director in the surface layer of lyotropic
nematic liquid crystals in an external magnetic field. The characteristic time of the orientation …

Alignment change by moisture adsorption in nematic liquid crystals

G Barbero, G Kaniadakis, E Miraldi… - … Physics Letters B, 1992 - World Scientific
The abrupt change of the director orientation in nematic liquid crystals, for certain critical
values of the cell thickness is described, and explained in terms of a change in surface …

Some magneto-hydrostatic effects in nematic liquid crystals

FM Leslie - Journal of Physics D: Applied Physics, 1970 - iopscience.iop.org
This paper discusses static orientation patterns in nematic liquid crystals in the presence of
magnetic fields. Some solutions of the equations of a continuum theory are presented, and …

Freedericksz transition and anchoring effects in the oblique configuration of a nematic liquid crystal

T Motooka, A Fukuhara, K Suzuki - Applied Physics Letters, 1979 - pubs.aip.org
The following is theoretically shown:(1) The Freedericksz transition for nematic liquid
crystals (NLC) can be defined in a clear-cut way for cases where NLC is initially aligned …

Interfacial effects in the magnetohydrostatic theory of nematic liquid crystals

PJ Barratt, JT Jenkins - … of Physics A: Mathematical, Nuclear and …, 1973 - iopscience.iop.org
Associates an anisotropic surface energy with a nematic liquid crystal-isotropic fluid
interface. Employing continuum theory, two sets of simple experimental situations are …

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 …