156 citations · 1.2k across the 64 of their papers we have counts for
7 papers · 1 filter
Retrieving the saddle-splay elastic constant of nematic liquid crystals from an algebraic approach
Sébastien Fumeron, Fernando Moraes, Erms Pereira
The physics of light interference experiments is well established for nematic liquid crystals. Using well-known techniques, it is possible to obtain important quantities, such as t…
Modeling Kleinian cosmology with electronic metamaterials
David Figueiredo, Felipe Azevedo Gomes, Sébastien Fumeron +2
This paper deals with the propagation of Klein-Gordon particles in flat background spacetime exhibiting discontinuous metric changes from a Lorentzian signature (-,+,+,+) to a Klei…
Generation of optical vorticity from topological defects
Sébastien Fumeron, Erms Pereira, Fernando Moraes
The propagation of an electromagnetic wave in a medium with a screw dislocation is studied. Adopting the formalism of differential forms, it is shown that torsion is responsible fo…
Thermal diode made by nematic liquid crystal
Djair Melo, Ivna Fernandes, Fernando Moraes +2
This work investigates how a thermal diode can be designed from a nematic liquid crystal confined inside a cylindrical capillary. In the case of homeotropic anchoring, a defect str…
Relativistic Quantum Dynamics on a Double Cone
Felipe Gomes, Edilberto Silva, Jonas Lima +2
In this paper, we study the relativistic quantum problem of a particle constrained to a double cone surface. For this purpose, we build the Dirac equation in a curved space using t…
Propagation of acoustic waves in a von-Kármán vortex street like configuration of disclinations
Sébastien Fumeron, Bertrand Berche, Fernando Moraes +2
We show that a simple model of 1D array of topological defects in a crystalline environment is able to guide acoustic waves, depending on the angle of the incident wave. We comment…