Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por autor UPNA "Liberal Olleta, Íñigo"
Mostrando ítems 1-17 de 17
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Amorphous glass-coated ferromagnetic wires in microwave engineering
Liberal Olleta, Íñigo
(2013)
Tesis doctoral / Doktoretza tesia 
En esta tesis se ha estudiado el uso de hilos ferromagnéticos recubiertos de vidrio en ingeniería de microondas. Para este fin, se han formulado modelos analíticos y equivalentes circuitales de la interacción entre un ... -
Circuit and multipolar approaches to investigate the balance of powers in 2D scattering problems
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (EMW Publishing, 2013)
Artículo / Artikulua
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
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gómez Polo, Cristina ; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio ; Gonzalo García, Ramón (IEEE, 2012)
Artículo / Artikulua
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 ... -
Electromangetic force density in electrically and magnetically polarizable media
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (American Physical Society, 2013)
Artículo / Artikulua
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, ... -
Enhancing the infrared and visible emission properties of calcium silicate hydrate for radiative cooling using metamaterials
Lezaun Capdevila, Carlos; Dolado, J. S.; Torres García, Alicia E. ; Pérez Escudero, José Manuel ; Liberal Olleta, Íñigo ; Beruete Díaz, Miguel (IEEE, 2022)
Contribución a congreso / Biltzarrerako ekarpena
Two periodic structures composed of metal cylinders with different orientations are used to improve the solar reflection of calcium silicate hydrate (CSH) while maintaining its atmospheric emission. Interesting effects ... -
Fe-rich ferromagnetic wires for self-sensing materials
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón (IEEE, 2012)
Artículo / Artikulua
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 ... -
Geometry-invariant resonant cavities
Liberal Olleta, Íñigo ; Mahmoud, A. M.; Engheta, Nader (Springer Nature, 2016)
Artículo / Artikulua
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 ... -
Induction theorem analysis of resonant nanoparticles: design of a huygens source nanoparticle laser
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (American Physical Society, 2014)
Artículo / Artikulua
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
Liberal Olleta, Íñigo ; Ra'di, Younes; Gonzalo García, Ramón ; Ederra Urzainqui, Íñigo ; Tretyakov, Sergei A.; Ziolkowski, Richard W. (IEEE, 2014)
Artículo / Artikulua
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 ... -
Magnetic dipole super-resonances and their impact on mechanical forces at optical frequencies
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (Optical Society of America, 2014)
Artículo / Artikulua
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
Liberal Olleta, Íñigo ; Engheta, Nader (National Academy of Sciences, 2018)
Artículo / Artikulua
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 ... -
A multipolar analysis of near-field absorption and scattering processes
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (IEEE, 2013)
Artículo / Artikulua
A multipolar formulation is adopted to investigate the absorption and scattering processes involved in near-field interactions. This approach allows one to determine the upper bounds for the absorbed and radiated powers ... -
Near-field electromagnetic trapping through curl-spin forces
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (American Physical Society, 2013)
Artículo / Artikulua
Near-field electromagnetic trapping of particles is generally obtained bymeans of gradient forces. In this paper, we discuss the attractive behavior of curl-spin forces, as well as their potential for near-field ... -
Optomagnonics in dispersive media: magnon-photon coupling enhancement at the epsilon-near-zero frequency
Bittencourt, V.A.S.V.; Liberal Olleta, Íñigo ; Viola Kusminskiy, Silvia (American Physical Society, 2022)
Artículo / Artikulua
Reaching strong light-matter coupling in solid-state systems has long been pursued for the implementation of scalable quantum devices. Here, we put forward a system based on a magnetized epsilon-near-zero (ENZ) medium, and ... -
Superbackscattering antenna arrays
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (IEEE, 2015)
Artículo / Artikulua
This article discusses the theory, design and practical implementation of superbackscattering antenna arrays. In analogy with Uzkov’s maximal directivity theorem, it is demonstrated that the maximal backscattering ... -
Theoretical modeling and experimental verification of the scattering from a ferromagnetic microwire
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gómez Polo, Cristina ; Labrador Otamendi, Alberto; Pérez de Landazábal Berganzo, José Ignacio ; Gonzalo García, Ramón (IEEE, 2011)
Artículo / Artikulua
This contribution presents a theoretical modelling of the scattering of ferromagnetic microwires in free-space and inside a rectangular waveguide, providing both an analytical solution and a physical interpretation of ... -
Upper bounds on scattering processes and metamaterial-inspired structures that reach them
Ederra Urzainqui, Íñigo ; Liberal Olleta, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (IEEE, 2014)
Artículo / Artikulua
The physical limitations on time-harmonic scattering processes are investigated on the basis of the optical theorem. Previously derived least upper bounds on the total scattering and absorption cross-sections are obtained ...
