Geometric theory of topological defects: methodological developments and new trends

S Fumeron, B Berche, F Moraes - Liquid Crystals Reviews, 2021 - Taylor & Francis
Liquid crystals generally support orientational singularities of the director field known as
topological defects. These latter modify transport properties in their vicinity as if the geometry …

Impact of a topological defect and Rashba spin-orbit interaction on the thermo-magnetic and optical properties of a 2D semiconductor quantum dot with Gaussian …

JD Castano-Yepes, DA Amor-Quiroz… - Physica E: Low …, 2019 - Elsevier
In this paper, we examine the effect of introducing a conical disclination on the thermal and
optical properties of a two dimensional GaAs quantum dot in the presence of a uniform and …

Wave propagation in metamaterials mimicking the topology of a cosmic string

I Fernández-Núñez, O Bulashenko - Journal of Optics, 2018 - iopscience.iop.org
We study the interference and diffraction of light when it propagates through a metamaterial
medium mimicking the spacetime of a cosmic string—a topological defect with curvature …

Optical transition rates of a polar quantum disc with conical disclination in a magnetic field: effects of some forms of the electric potential

V Kumar, S Pratap, M Tshipa, M Masale - The European Physical Journal …, 2024 - Springer
Theoretical investigations are carried out of optical transitions of a polar disc with a conical
disclination and under the influence of a parallel applied uniform magnetic field. Additional …

Magneto‐optical specifications of Rosen‐Morse quantum dot with screw dislocation

MK Bahar, F Ungan - International Journal of Quantum …, 2020 - Wiley Online Library
This is the first study to consider a quantum dot with screw dislocation that has Rosen‐Morse
(RM) confinement potential, generated by a GaAs/GaAlAs heterostructure. An external …

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

WKP Barros, E Pereira - Scientific reports, 2018 - nature.com
Controlling light and heat via metamaterials has presented interesting technological
applications using transformation optics (TO) and transformation thermodynamics (TT) …

High thermal rectifications using liquid crystals confined into a conical frustum

JG Silva, S Fumeron, F Moraes, E Pereira - Brazilian Journal of Physics, 2018 - Springer
In recent years, phononics, that studies thermal analogs of electronic devices, has become
an important subject due to the need for better use of energy resources influenced by …

Simultaneous rectification of heat and light using liquid crystal

SJ Santos, J Andrade, E Pereira - Journal of Applied Physics, 2018 - pubs.aip.org
The detection and treatment of signals are proper applications of, for example, thermal and
optical diodes. However, such devices are mono-physical ones, rectifying only one kind of …

Thermal and shape topological robustness of heat switchers using nematic liquid crystals

S Fumeron, F Moraes, E Pereira - The European Physical Journal E, 2018 - Springer
One interesting way to control heat is to use devices designed by transformation thermics,
where artificial media are used. However, once manufactured (either repelling or …

High rectification in a broadband subwavelength acoustic device using liquid crystals

E Viana, F Moraes, S Fumeron, E Pereira - Journal of Applied Physics, 2019 - pubs.aip.org
Acoustic diodes can be relevant to improve the audible comfort of indoor environments or to
provide better ultrasound images. However, such diodes are usually based on nonlinear …