94 citations · 412 across the 20 of their papers we have counts for
23 papers
Asymmetric Negative Refraction in Nonlocal Double-Wire Metamaterials
Tiago A. Morgado, Sylvain Lannebère, Enrico M. Renzi +2
We demonstrate that heterogeneous double-wire metamaterials, comprising two dissimilar and nonconnected wire arrays, enable loss-asymmetric hyperbolic dispersion and strongly asymm…
Symmetry Analysis of the Non-Hermitian Electro-Optic Effect in Crystals
Sylvain Lannebère, Tatiana G. Rappoport, Tiago A. Morgado +2
Here, we investigate how crystal symmetry tailors the non-Hermitian electro-optic effect arising from the Berry curvature dipole. Specifically, we demonstrate the critical influenc…
Replacing the Gallium Oxide Shell with Conductive Ag: Toward a Printable and Recyclable Composite for Highly Stretchable Electronics, Electromagnetic Shielding, and Thermal Interfaces
Abdollah Hajalilou, Elahe Parvini, Tiago A. Morgado +4
Liquid metal (LM)-based composites hold promise for soft electronics due to their high conductivity and fluidic nature. However, the presence of α_Ga2O3 and GaOOH layers around LM…
Chiral-Gain Photonics
Sylvain Lannebère, David E. Fernandes, Tiago A. Morgado +1
Here, we present an exploratory study of the potential applications of electrically biased materials that possess a nonreciprocal and non-Hermitian electromagnetic response analogo…
Non-Hermitian Linear Electrooptic Effect in 3D materials
Tiago A. Morgado, Tatiana G. Rappoport, Stepan S. Tsirkin +3
Here, we present an in-depth theoretical analysis of the linear electrooptic effect in low-symmetry three-dimensional (3D) conductive materials with large Berry curvature dipoles.…
High Q-factor Fano resonances in coupled wire arrays with bulk structural asymmetry
David E. Fernandes, Sylvain Lannebère, Tiago A. Morgado
In this article we characterize the macroscopic electromagnetic response of a nested wire metamaterial with a high degree of bulk structural asymmetry. The unit cell of the conside…
Exceptional points in transistor-metamaterial inspired transmission lines
David E. Fernandes, Sylvain Lannebère, Tiago A. Morgado +1
Motivated by our recent findings in [Phys. Rev. Lett. 128, 013902, 2022], which introduces a new class of electromagnetic bulk materials whose response is similar to conventional s…
Experimental verification of magnetic near-field channeling using a helical-shaped wire medium lens
Tiago A. Morgado, Guilherme L. João, Ricardo A. M. Pereira +2
We experimentally verify that a magnetic uniaxial wire medium lens consisting of a racemic array of helical-shaped metallic wires may enable channeling the normal component of the…
Directional dependence of the plasmonic gain and nonreciprocity in drift-current biased graphene
Tiago A. Morgado, Mário G. Silveirinha
Here, we investigate the nonreciprocal propagation and amplification of surface plasmons in drift-current biased graphene, using both Galilean and relativistic-type Doppler shift t…
Engineering transistor-like optical gain in two-dimensional materials with Berry curvature dipoles
Tatiana G. Rappoport, Tiago A. Morgado, Sylvain Lannebère +1
Semiconductor transistors are essential elements of electronic circuits as they enable, for example, the isolation or amplification of voltage signals. While conventional transisto…
Nonreciprocal and non-Hermitian material response inspired by semiconductor transistors
Sylvain Lannebère, David E. Fernandes, Tiago A. Morgado +1
Here, inspired by the operation of conventional semiconductor transistors, we introduce a novel class of bulk materials with nonreciprocal and non-Hermitian electromagnetic respons…
Experimental Verification of Ill-defined Topologies and Energy Sinks in Electromagnetic Continua
David E. Fernandes, Ricardo A. M. Pereira, Sylvain Lannebère +2
In this article, it is experimentally verified that nonreciprocal photonic systems with a continuous translation symmetry may have an ill-defined topology. The topological classifi…
Active graphene plasmonics with a drift-current bias
Tiago A. Morgado, Mário G. Silveirinha
We theoretically demonstrate that a system formed by a drift-current biased graphene sheet on a silicon carbide substrate enables loss compensation and plasmon amplification. The a…
First Principles Homogenization of Periodic Metamaterials and Application to Wire Media
Sylvain Lannebère, Tiago A. Morgado, Mário G. Silveirinha
Here, we present an overview of a first principles homogenization theory of periodic metamaterials. It is shown that in a rather general context it is possible to formally introduc…
Nonlocal effects and enhanced nonreciprocity in current-driven graphene systems
Tiago A. Morgado, Mário G. Silveirinha
A graphene sheet biased with a drift electric current offers a tantalizing opportunity to attain unidirectional, backscattering-immune, and subwavelength light propagation, as prop…
Topological pumping in photonic systems
Solange V. Silva, David E. Fernandes, Tiago A. Morgado +1
The topology of typical Chern insulators is rooted in the periodicity of the system along two directions of real-space. In this article, we depart from this standard concept and de…
Multiple Embedded Eigenstates in Nonlocal Plasmonic Nanostructures
Solange V. Silva, Tiago A. Morgado, Mario G. Silveirinha
Trapping light in open cavities is a long sought "holy grail" of nanophotonics. Plasmonic materials may offer a unique opportunity in this context, as they may fully suppress the r…
Reply to the Comment on "Negative Landau damping in bilayer graphene"
Tiago A. Morgado, Mário G. Silveirinha
Here we address the concerns of Svintsov and Ryzhii [arXiv:1812.03764] on our article on negative Landau damping in graphene [Phys. Rev. Lett. 119, 133901 (2017)]. We prove that du…
Drift-induced Unidirectional Graphene Plasmons
Tiago A. Morgado, Mário G. Silveirinha
Nonreciprocal photonic devices enable "one-way" light flows and are essential building blocks of optical systems. Here, we investigate an alternative paradigm to break reciprocity…
Negative Landau damping in bilayer graphene
Tiago A. Morgado, Mário G. Silveirinha
We theoretically demonstrate that a system formed by two coupled graphene sheets enables a negative damping regime wherein graphene plasmons are pumped by a DC current. This effect…
Single-Interface Casimir Torque
Tiago A. Morgado, Mário G. Silveirinha
It is shown that the quantum fluctuations of the electromagnetic field generally induce a torque at the interface of an anisotropic material with another anisotropic or isotropic m…
Super collimation of the radiation by a point source in a uniaxial wire medium
Tiago A. Morgado, Mário G. Silveirinha
We investigate the radiation properties of a short horizontal dipole embedded in a uniaxial wire medium. It is shown that the uniaxial wire medium enables a super-collimation of th…
Analytical solution for the stopping power of the Cherenkov radiation in a uniaxial nanowire material
Tiago A. Morgado, David E. Fernandes, Mário G. Silveirinha
We derive closed analytical formulae for the power emitted by moving charged particles in a uniaxial wire medium by means of an eigenfunction expansion. Our analytical expressions…