Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por autor "Ziolkowski, Richard W."
Mostrando ítems 1-9 de 9
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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 / ArtikuluaCircuit 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 ... -
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 / ArtikuluaThe 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, ... -
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 / ArtikuluaWe 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 / ArtikuluaThe 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 / ArtikuluaArtificial magnetism enables various transformative optical phenomena, including negative refraction, Fano resonances, and unconventional nanoantennas, beamshapers, polarization transformers and perfect absorbers, and ... -
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 / ArtikuluaA 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 / ArtikuluaNear-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 ... -
Superbackscattering antenna arrays
Liberal Olleta, Íñigo ; Ederra Urzainqui, Íñigo ; Gonzalo García, Ramón ; Ziolkowski, Richard W. (IEEE, 2015) Artículo / ArtikuluaThis 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 ... -
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 / ArtikuluaThe 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 ...