Listar Artículos de revista - Aldizkari artikuluak por autor UPNA "Liberal Olleta, Íñigo"
Mostrando ítems 1-20 de 41
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Addressing the impact of surface roughness on epsilon-near-zero silicon carbide substrates
Epsilon-near-zero (ENZ) media have been very actively investigated due to their unconventional wave phenomena and strengthened nonlinear response. However, the technological impact of ENZ media will be determined by the ... -
Circuit and multipolar approaches to investigate the balance of powers in 2D scattering problems
Circuit and multipolar approaches are presented to investigate the correlation between absorption and scattering processes in 2D problems. This investigation was inspired by earlier works of Prof.R.E. Collin, which pointed ... -
A comprehensive analysis of the absorption spectrum of conducting ferromagnetic wires
A detailed analysis of the absorption spectrum of conductive ferromagnetic wires is presented. The absorption spectrum is computed from the solution to the scattering problem, and circuit models are formulated to clarify ... -
Direct observation of ideal electromagnetic fluids
Near-zero-index (NZI) media have been theoretically identified as media where electromagnetic radiations behave like ideal electromagnetic fluids. Within NZI media, the electromagnetic power flow obeys equations similar ... -
Dispersion coding of ENZ media via multiple photonic dopants
Epsilon-near-zero (ENZ) media are opening up exciting opportunities to observe exotic wave phenomena. In this work, we demonstrate that the ENZ medium comprising multiple dielectric photonic dopants would yield a comb-like ... -
Effect of epsilon-near-zero modes on the casimir interaction between ultrathin films
Vacuum fluctuation-induced interactions between macroscopic metallic objects result in an attractive force between them, a phenomenon known as the Casimir effect. This force is the result of both plasmonic and photonic ... -
Electrically switchable Casimir forces using transparent conductive oxides
Casimir forces between charge-neutral bodies originate from quantum vacuum fluctuations of electromagnetic fields, which exhibit a critical dependence on material's electromagnetic properties. Over the years, in situ ... -
Electromangetic force density in electrically and magnetically polarizable media
The force density induced by electromagnetic fields in electrically and magnetically polarizable media is studied analytically. Different formulations of the force density as a function of field-related quantities, ... -
Fe-rich ferromagnetic wires for self-sensing materials
The possibility of using Fe-rich wires in mechanical stress self-sensing materials is investigated. To this end, a retrieval technique aimed to characterize the high-frequency magnetoimpedance effect in ferromagnetic wires ... -
Fundamental radiative processes in near-zero-index media of various dimensionalities
Spontaneous emission, stimulated emission and absorption are the three fundamental radiative processes describing light-matter interactions. Here, we theoretically study the behavior of these fundamental processes inside ... -
Generalized approach to quantum interference in lossy N-port devices via a singular value decomposition
Modeling quantum interference in the presence of dissipation is a critical aspect of quantum technologies. Including dissipation into the model of a linear device enables for assessing the detrimental impact of photon loss, ... -
Geometry-independent antenna based on Epsilon-near-zero medium
It is well known that electromagnetic radiation from radiating elements (e.g., antennas, apertures, etc.) shows dependence on the element’s geometry shape in terms of operating frequencies. This basic principle is ... -
Geometry-invariant resonant cavities
Resonant cavities are one of the basic building blocks in various disciplines of science and technology, with numerous applications ranging from abstract theoretical modelling to everyday life devices. The eigenfrequencies ... -
Grating lobes in higher-order correlation functions of arrays of quantum emitters: directional photon bunching versus correlated directions
Recent advances in nanofabrication and optical manipulation techniques are making it possible to build arrays of quantum emitters with accurate control over the locations of their individual elements. In analogy with ... -
Incandescent temporal metamaterials
Regarded as a promising alternative to spatially shaping matter, time-varying media can be seized to control and manipulate wave phenomena, including thermal radiation. Here, based upon the framework of macroscopic quantum ... -
Induction theorem analysis of resonant nanoparticles: design of a huygens source nanoparticle laser
We propose an advanced formulation of standard antenna theory for the basic investigation and design of resonant nanoparticles. This methodology is based on transforming the original scattering problem into a radiation ... -
Least upper bounds of the powers extracted and scattered by bi-anisotropic particles
The least upper bounds of the powers extracted and scattered by bi-anisotropic particles are investigated analytically. A rigorous derivation for particles having invertible polarizability tensors is presented, and the ... -
Light propagation and magnon-photon coupling in optically dispersive magnetic media
Achieving strong coupling between light and matter excitations in hybrid systems is a benchmark for the implementation of quantum technologies. We recently proposed (Bittencourt, Liberal, and Viola-Kusminskiy, arXiv:2110.02984) ... -
Magnetic dipole super-resonances and their impact on mechanical forces at optical frequencies
Artificial magnetism enables various transformative optical phenomena, including negative refraction, Fano resonances, and unconventional nanoantennas, beamshapers, polarization transformers and perfect absorbers, and ... -
Manipulating thermal emission with spatially static fluctuating fields in arbitrarily shaped epsilon-near-zero bodies
The control and manipulation of thermal fields is a key scientific andtechnological challenge, usually addressed with nanophotonic struc-tures with a carefully designed geometry. Here, we theoreticallyinvestigate a different ...