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Order reconstruction for nematics on squares and hexagons

We construct an order reconstruction (OR-)type Landau-de Gennes critical point on a square domain of edge length 2λ, motivated by the well order reconstruction solution numerically reported in [S. Kralj and A. Majumdar, Proc....

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Order reconstruction for nematics on squares and hexagons

We construct an order reconstruction (OR-)type Landau-de Gennes critical point on a square domain of edge length 2λ, motivated by the well order reconstruction solution numerically reported in [S. Kralj and A. Majumdar, Proc....

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Magnetic Nanoparticles in a Nematic Channel
We study a dilute suspension of magnetic nanoparticles in a nematic-filled channel and how the spatial magnetization M, can be tailored by the nematic anisotropy. We study the spatial configurations as stable critical points of...
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Remarks on uniaxial solutions in the Landau–de Gennes theory
Apala Majumdar, Yiwei Wang
Aug 01, 2018

We study uniaxial solutions of the Euler–Lagrange equations for a Landau–de Gennes free energy for nematic liquid crystals, with a fourth order bulk potential, with and without elastic anisotropy. These uniaxial solutions are...

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Global Weak Solutions for the Compressible Active Liquid Crystal System
Apala Majumdar
Jan 01, 0001
We study the hydrodynamics of compressible flows of active liquid crystals in the Beris--Edwards hydrodynamics framework, using the Landau--de Gennes $Q$-tensor order parameter to describe liquid crystalline ordering. We prove...
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Global Weak Solutions for the Compressible Active Liquid Crystal System
Apala Majumdar
Jan 01, 0001
We study the hydrodynamics of compressible flows of active liquid crystals in the Beris--Edwards hydrodynamics framework, using the Landau--de Gennes $Q$-tensor order parameter to describe liquid crystalline ordering. We prove...
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Detectable Abundance of Cyanoacetylene (HC 3 N) Predicted on Reduced Nitrogen-rich Super-Earth Atmospheres
Abstract: We predict that cyanoacetylene (HC3N) is produced photochemically in the atmosphere of GJ 1132 b in abundances detectable by the James Webb Space Telescope (JWST), assuming that the atmosphere is hydrogen dominated and...
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Global existence and regularity of solutions for active liquid crystals

We study the hydrodynamics of active liquid crystals in the Beris-Edwards hydrodynamic framework with the Landau-de Gennes Q-tensor order parameter to describe liquid crystalline ordering. The existence of global weak...

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Free energy pathways of a multistable liquid crystal device
The planar bistable device [Tsakonas et al., Appl. Phys. Lett., 2007, 90, 111913] is known to have two distinct classes of stable equilibria: the diagonal and rotated solutions. We model this device within the two-dimensional...
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Multistable nematic wells

This review article is a consolidated but not exhaustive account of recent modelling and numerical work on nematic-filled square or cuboid shaped wells with planar degenerate boundary conditions. This seemingly simple...

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Remarks on uniaxial solutions in the Landau–de Gennes theory
Apala Majumdar, Yiwei Wang
Aug 01, 2018

We study uniaxial solutions of the Euler–Lagrange equations for a Landau–de Gennes free energy for nematic liquid crystals, with a fourth order bulk potential, with and without elastic anisotropy. These uniaxial solutions are...

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Order reconstruction phenomena and temperature-driven dynamics in a 3D zenithally bistable device
A. Raisch, A. Majumdar
Jul 01, 2014
We model the zenithally bistable device (ZBD) in three dimensions (3D), within the Landau-de Gennes theory, and find three stable static states in 3D without an applied field: the vertically aligned nematic (VAN) state, the...
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Symmetry of uniaxial global Landau-de Gennes minimizers in the theory of nematic liquid crystals
Duvan Henao, Apala Majumdar
Jan 01, 0001
We extend the recent radial symmetry results by Pisante [J. Funct. Anal., 260 (2011), pp. 892--905] and Millot and Pisante [J. Eur. Math. Soc. $($JEMS$)$, 12 (2010), pp. 1069--1096] (who show that the equivariant solutions are...
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Order reconstruction phenomena and temperature-driven dynamics in a 3D zenithally bistable device
A. Raisch, A. Majumdar
Jul 01, 2014
We model the zenithally bistable device (ZBD) in three dimensions (3D), within the Landau-de Gennes theory, and find three stable static states in 3D without an applied field: the vertically aligned nematic (VAN) state, the...
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Order reconstruction patterns in nematic liquid crystal wells
Samo Kralj, A Majumdar
Sep 01, 2014
We numerically study structural transitions inside shallow sub-micrometre scale wells with square cross section, filled with nematic liquid crystal material. We model the wells within the Landau–de Gennes theory. We obtain two...
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Multistable nematic wells

This review article is a consolidated but not exhaustive account of recent modelling and numerical work on nematic-filled square or cuboid shaped wells with planar degenerate boundary conditions. This seemingly simple...

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Free energy pathways of a multistable liquid crystal device
The planar bistable device [Tsakonas et al., Appl. Phys. Lett., 2007, 90, 111913] is known to have two distinct classes of stable equilibria: the diagonal and rotated solutions. We model this device within the two-dimensional...
Published by:
Order reconstruction patterns in nematic liquid crystal wells
Samo Kralj, A Majumdar
Sep 01, 2014
We numerically study structural transitions inside shallow sub-micrometre scale wells with square cross section, filled with nematic liquid crystal material. We model the wells within the Landau–de Gennes theory. We obtain two...
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Symmetry of uniaxial global Landau-de Gennes minimizers in the theory of nematic liquid crystals
Duvan Henao, Apala Majumdar
Jan 01, 0001
We extend the recent radial symmetry results by Pisante [J. Funct. Anal., 260 (2011), pp. 892--905] and Millot and Pisante [J. Eur. Math. Soc. $($JEMS$)$, 12 (2010), pp. 1069--1096] (who show that the equivariant solutions are...
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Melanoma Detection From Lesion Images Using Optimized Features Selected by Metaheuristic Algorithms
This paper deals with a simple but efficient method for detection of deadly malignant melanoma with optimized hand-crafted feature sets selected by three alternative metaheuristic algorithms, namely Particle Swarm Optimization...
Front Propagation at the Nematic-Isotropic Transition Temperature

We study the gradient flow model for the Landau--de Gennes energy functional for nematic liquid crystals at the nematic-isotropic transition temperature on prototype geometries. We study the dynamic model on a...
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Magnetic Nanoparticles in a Nematic Channel
We study a dilute suspension of magnetic nanoparticles in a nematic-filled channel and how the spatial magnetization M, can be tailored by the nematic anisotropy. We study the spatial configurations as stable critical points of...
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Order Reconstruction for Nematics on Squares with Isotropic Inclusions

We prove the existence of a well order reconstruction solution (WORS)-type Landau- de Gennes critical point on a square domain with an isotropic concentric square inclusion, with tangent boundary conditions on the outer...

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Order Reconstruction for Nematics on Squares with Isotropic Inclusions

We prove the existence of a well order reconstruction solution (WORS)-type Landau- de Gennes critical point on a square domain with an isotropic concentric square inclusion, with tangent boundary conditions on the outer...

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Global existence and regularity of solutions for active liquid crystals

We study the hydrodynamics of active liquid crystals in the Beris-Edwards hydrodynamic framework with the Landau-de Gennes Q-tensor order parameter to describe liquid crystalline ordering. The existence of global weak...

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