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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....

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....

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...
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...

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...
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...
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...
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...
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...

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...
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...

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...

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...
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...
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...
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...
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...

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...
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...
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...
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...

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...
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...
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...

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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