García Meca, Carlos; Martínez Abietar, Alejandro José; Leonhardt, U.(Optical Society of America, 2011)
We use a combination of conformal and quasi-conformal mappings to engineer isotropic electromagnetic devices that modify the omnidirectional radiation pattern of a point source. For TE waves, the designed devices are also ...
We present a way of exciting surface plasmon polaritons along non-patterned metallic surfaces by means of a flat squeezing slab designed with transformation optics. The slab changes the dispersion relation of incident ...
[EN] The interaction of light with subwavelength metallic nano-structures is at the heart of different
current scientific hot topics, namely plasmonics, metamaterials and nanoantennas. Research in
these disciplines during ...
Ortuño Molinero, Rubén(Universitat Politècnica de València, 2012-02-03)
Esta tesis trata sobre el fascinante fenómeno de la transmisión extraordinaria a través de láminas metálicas nonoestructuradas periódicamente con aperturas al corte. Un efecto relacionado con la excitación de un tipo de ...
García Meca, Carlos; Ortuño Molinero, Rubén; Martí Sendra, Javier; Martínez Abietar, Alejandro José(IOP Publishing: Open Access Journals, 2014-02-21)
We present a method that enables the implementation of full three-dimensional (3D) transformation media with minimized anisotropy. It is based on a special kind of shape-preserving mapping and a subsequent optimization ...
Rodríguez Fortuño, Francisco José; Ortuño Molinero, Rubén; García Meca, Carlos; Martí Sendra, Javier; Martínez Abietar, Alejandro José(American Institute of Physics (AIP), 2012)
Optical measurements of the transmission spectra through nanofabricated planar arrays of silver u-shaped nanowires on a silicon substrate resonating at infrared frequencies are performed. Good agreement with the numerically ...
Díaz-Fernández, Francisco Javier; Martí Sendra, Javier; García Meca, Carlos(John Wiley & Sons, 2023-02)
[EN] Invisibility cloaks have become one of the most outstanding developments among the wide range of applications in the field of metamaterials. So far, most efforts in invisibility science have been devoted to achieving ...
Peiró-Torres, María Del Pilar; Castiñeira Ibáñez, Sergio; Redondo, Javier; Sánchez Pérez, Juan Vicente(American Institute of Physics, 2019-04-29)
[EN] The emergence of materials artificially designed to control the transmission of waves, generally called metamaterials, has been a hot topic in the field of acoustics for several years. The design of these metamaterials ...
We experimentally demonstrate a low-loss multilayered metamaterial exhibiting a double-negative refractive index in the visible spectral range. To this end, we exploit a second-order magnetic resonance of the so-called ...
Anisotropic and inhomogeneous metamaterial shells are studied in order to exploit all their resonant mode richness. These multilayer structures are based on a cylindrical distribution of radially dependent constitutive ...
Lorente Crespo, María(Universitat Politècnica de València, 2013-07-08)
[ES] En este trabajo se demuestra que la resonancia plasmónica excitada en un array de nano-anillos de oro bajo incidencia normal cambia de carácter, de eléctrico a magnético, si los anillos tienen una altura lo sufientemente ...
Ginzburg, Pavel; Rodríguez Fortuño, Francisco José; Wurtz, G.A.; Dickson, W.; Murphy, Antony; Morgan, F.; Pollard, Robert; Iorsh, Ivan; Atrashchenko, Alexander; Belov, Pavel; Kivshar, Y.S.; Nevet, A.; Ankonina, G.; Orenstein, M.; Zayats, A.V.(Optical Society of America, 2013-06-13)
[EN] One of the basic functionalities of photonic devices is the ability to manipulate the polarization state of light. Polarization components are usually implemented using the retardation effect in natural birefringent ...
Reflection in a mirror changes the handedness of the real world, and right-handed objects turn left-handed and vice versa (M. Gardner, The Ambidextrous Universe, Penguin Books, 1964). Also, we learn from electromagnetism ...
[EN] It is generally accepted that the magnetic component of light has a minor role in the light-matter interaction. The recent discovery of metamaterials has broken this traditional understanding, as both the electric and ...
Anisotropic characteristics of cylindrically corrugated microstructures are analyzed in terms of their acoustic and electromagnetic (EM) behavior paying special attention to their differences and similarities. A simple ...
A multiple scattering formulation of two-dimensional (2D) acoustic metamaterials is presented. This approach is comprehensive and can lead to frequency-dependent effective parameters (scalar bulk modulus and tensorial mass ...
[EN] The nonlocal effective permittivity tensor for photonic crystals (PCs), having dielectric and metallic inclusions in the unit cell, is calculated and analyzed within the homogenization theory based on the Fourier ...
García Meca, Carlos; Barceló, Carlos(American Physical Society, 2016-06-17)
[EN] We present an alternative version of transformation optics that allows us to mold the flow of light without rotating or scaling the electromagnetic fields. The resulting media experience unusual force densities, are ...
Díaz Fernández, Francisco Javier(Universitat Politècnica de València, 2022-01-21)
[ES] La tomografía por difracción surge para mejorar las técnicas de imagen al considerar la naturaleza ondulatoria de la luz. Mientras que los primeros sistemas de imagen médica se basaban únicamente en fuentes sin ...
Climente Alarcón, Alfonso; Torrent Martí, Daniel; Sánchez-Dehesa Moreno-Cid, José(American Institute of Physics, 2012-04-06)
We present the design, construction, and experimental characterization of the acoustic analogue of the so called photonic black-hole. The fabricated sample has cylindrical symmetry and consists of two parts, a shell that ...