Director profile of a nematic between two concentric cylinders with inhomogeneous boundary conditions

Yednak, C. A. R.; Lenzi, E. K.; Evangelista, L. R.

doi:10.1590/s0103-97332009000300013

Cited by 7 publications

(1 citation statement)

References 17 publications

(21 reference statements)

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“…We have shown that this computational approach is very useful not only in determining the thermodynamic observables of the system but also the molecular organisation that results from the competition of the above mentioned conditions. On the other hand, the continuum elastic theory has been a useful tool for investigating some phenomena in non-planar geometry, in which non usual consequences have been found [3][4][5][6][7][8][9][10]. Here we have started to combine the simulation and continuum theory approaches to investigate the problem of nematics confined between concentric cylindrical surfaces [11,12].…”

Section: Introductionmentioning

confidence: 99%

Computer simulations of the ordering in a hybrid cylindrical film of nematic liquid crystals

Chiccoli

Pasini²,

Souza³

et al. 2011

Phys. Rev. E

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We present an investigation of the ordering in a nematic liquid-crystal film confined between two cylindrical surfaces with antagonistic (radial and planar) anchoring alignments. A Monte Carlo study of a Lebwohl-Lasher model with suitable boundary conditions has been performed to calculate the ordering and the molecular organization for different film thicknesses. The simulation results are compared with some theoretical predictions obtained with the elastic continuum approach. The agreement between theory and simulation is improved as the thickness decreases.

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Section: Introductionmentioning

confidence: 99%

Computer simulations of the ordering in a hybrid cylindrical film of nematic liquid crystals

Chiccoli

Pasini²,

Souza³

et al. 2011

Phys. Rev. E

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Critical exponents for Fréedericskz transition in nematics between concentric cylinders

Souza

Dias

Mendes

et al. 2010

Physica A: Statistical Mechanics and its Applications

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Concurrent guiding of light and heat by transformation optics and transformation thermodynamics via soft matter

Barros

Pereira

2018

Sci Rep

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Controlling light and heat via metamaterials has presented interesting technological applications using transformation optics (TO) and transformation thermodynamics (TT). However, such devices are commonly mono-physics and mono-purpose, because the used metamaterial is designed to deal with one type of physical mechanisms. Here we demonstrate, for the first time, how to connect TO and TT via the liquid crystal 4-Cyano-4’-pentylbiphenyl (5CB) and, to exemplify such link, we present a multiphysics, multi-purpose device that simultaneously controls light and heat using such material. The anisotropic multiphysics properties of 5CB bond TO and TT, expanding the usage of these theories. The device, composed by 5CB confined between two right circular concentric cylinders, concentrates light (as a converging lens) and simultaneously repels heat from the inner cylinder when the molecules are along the direction and it disperses light (as a diverging lens) and concurrently concentrates heat to the inner cylinder, without disturbing the external temperature field, when the molecules are along the direction , contributing for saving materials and designing miniaturized multiphysics systems.

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Director profile of a nematic between two concentric cylinders with inhomogeneous boundary conditions

Cited by 7 publications

References 17 publications

Computer simulations of the ordering in a hybrid cylindrical film of nematic liquid crystals

Computer simulations of the ordering in a hybrid cylindrical film of nematic liquid crystals

Critical exponents for Fréedericskz transition in nematics between concentric cylinders

Concurrent guiding of light and heat by transformation optics and transformation thermodynamics via soft matter

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