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Listar por palabra clave "Metamaterials"

Mostrando ítems 1-20 de 58

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A new dielectric metamaterial building block with a strong magnetic response in the sub-1.5-micrometer region: Silicon colloid nanocavities

Shi, Lei; Tuzer, Turan Umut; Fenollosa Esteve, Roberto; Meseguer Rico, Francisco Javier (Wiley, 2012-11-20)

A new dielectric metamaterial building block based on high refractive index silicon spherical nanocavities with Mie resonances appearing in the near infrared optical region is prepared and characterized. It is demonstrated ...
Aerogel-based metasurfaces for perfect acoustic energy absorption

Fernandez-Marin, Antonio A.; Jimenez, Noe; Groby, Jean-Philippe; Sánchez-Dehesa Moreno-Cid, José; Romero García, Vicente (American Institute of Physics, 2019-08-05)

[EN] The unusual viscoelastic properties of silica aerogel plates are efficiently used to design subwavelength perfect sound absorbers. We theoretically, numerically and experimentally report a perfect absorbing metamaterial ...
An equivalent lattice-modified model of interfering Bragg bandgaps and Locally Resonant Stop Bands for phononic crystal made from Locally Resonant elements

Redondo, Javier; Godinho, Luis; Staliunas, Kestutis; Sánchez Pérez, Juan Vicente (Elsevier, 2023-08-31)

[EN] waves is a hot topic. An important class of these metamaterials is based on phononic crystals with Locally Resonant Structure, included in those commonly known as Locally Resonant Sonic Materials. In these metamaterials, ...
Analogue of the quantum hanle effect and polarization conversion in non-hermitian plasmonic metamaterials

Ginzburg, Pavel; Rodríguez Fortuño, Francisco José; Martínez Abietar, Alejandro José; Zayats, Anatoly V. (American Chemical Society, 2012-12)

The Hanle effect, one of the first manifestations of quantum theory introducing the concept of coherent superposition between pure states, plays a key role in numerous aspects of science varying from applicative spectroscopy ...
Analogue transformation acoustics and the compression of spacetime

García Meca, Carlos; Carloni, Sante; Barceló, Carlos; Jannes, Gil Georges Paul; Sánchez-Dehesa Moreno-Cid, José; Martínez Abietar, Alejandro José (Elsevier, 2014-08)

A recently developed technique known as analogue transformation acoustics has allowed the extension of the transformational paradigm to general spacetime transformations under which the acoustic equations are not form ...
Analogue Transformations in Physics and their Application to Acoustics

García Meca, Carlos; Carloni, S.; Barcelo, C.; Jannes, G.; Sánchez-Dehesa Moreno-Cid, José; Martínez Abietar, Alejandro José (Nature Publishing Group, 2013-06-18)

Transformation optics has shaped up a revolutionary electromagnetic design paradigm, enabling scientists to build astonishing devices such as invisibility cloaks. Unfortunately, the application of transformation techniques ...
Analysis and optimization of perforated panels making use of metamaterial concepts

Czuprynska, Gabriela (Universitat Politècnica de València, 2024-01-04)

[ES] Los materiales fonoabsorbentes mejoran el confort acústico controlando la reverberación y reduciendo los niveles de ruido. Los materiales porosos, como las espumas de celda abierta, destacan en la absorción de frecuencias ...
Anisotropic Metamaterials as sensing devices in acoustics and electromagnetism

Sánchez-Dehesa Moreno-Cid, José; Torrent Martí, Daniel; Carbonell Olivares, Jorge (Society of Photo-optical Instrumentation Engineers (SPIE), 2012)

We analyze the properties of acoustic and electromagnetic metamaterials with anisotropic constitutive parameters. Particularly, we analyze the so-called Radial Wave Crystals, which are radially periodic structures verifying ...
Antena de ranuras en guía radial para comunicaciones por satélite en la banda de milimétricas

Chuquitarco Jiménez, Carlos Alexander (Universitat Politècnica de València, 2019-08-01)

[ES] El reciente y futuro despliegue de constelaciones de satélites por parte de gigantes tecnológicos pronostica una etapa de grandes avances y nuevas áreas de investigación en el campo de los dispositivos implicados en ...
Desarrollo de un metamaterial zurdo en el espectro visible basado en guías plasmónicas

Rodríguez Fortuño, Francisco José (Universitat Politècnica de València, 2013-02-18)

[ES] Esta tesina, tras una introducción teórica a los novedosos campos de los metamateriales y la plasmónica, describe los esfuerzos de investigación realizados por el autor para la ideación de un innovador metamaterial ...
Design and implementation of plasmonic metamaterials and devices

Rodríguez Fortuño, Francisco José (Universitat Politècnica de València, 2013-07-18)

La plasmónica es la ciencia que estudia la interacción, a escala nanométrica, entre la luz y los electrones libres de los metales, dando lugar a la propagación de ondas altamente confinadas a su superficie. La plasmónica ...
Design and modelling of bioinspired 3D printed structures

Garrido, Conrado; Alabort, Enrique; Barba, Daniel (Editorial Universitat Politècnica de València, 2022-05-11)

[EN] Metamaterials are those that, through human engineering, have unusual properties that cannot be commonly found in nature. Recently, these metamaterials have been gaining importance due to the introduction of additive ...
Diffusive-light invisibility cloak for transient illumination

Orazbayev, Bakhtiyar; Beruete, Miguel; Martínez Abietar, Alejandro José; García Meca, Carlos (American Physical Society, 2016-12-22)

Invisibility in a diffusive-light-scattering medium has been recently demonstrated by employing a scattering-cancellation core-shell cloak. Unlike nondiffusive cloaks, such a device can be simultaneously macroscopic, ...
Diseño de metasuperficies absorbentes en el infrarrojo cercano y técnicas de reconfiguración

Carles Rausell, Marta (Universitat Politècnica de València, 2023-07-26)

[ES] Las metasuperficies constituyen un innovador campo de investigación en el que se está avanzando en desarrollar materiales artificiales con propiedades únicas. En particular, se están realizando esfuerzos por desarrollar ...
Diseño y caracterización de guías fotónicas con nanopartículas plasmónicas encima

Alepuz Benaches, Irene (Universitat Politècnica de València, 2013-02-18)

[ES] Hemos estudiado el comportamiento electromagnético de una estructura compuesta por una guía de silicio con nanodiscos de aluminio en su superficie para frecuencias de telecomunicaciones. Se ha confirmado la existencia ...
Dual Composite Right-/Left-Handed Coplanar Waveguide Transmission Line Using Inductively Connected Split-Ring Resonators

Belenguer Martínez, Ángel; Cascón López, Joaquín; Lucas Borja, Alejandro; Esteban González, Héctor; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers (IEEE), 2012-10)

In this paper, a simple geometrical modification of the well-known split-ring resonator (SRR) topology is proposed. This modification consists of joining the opposite sides of the rings by means of an inductive connection. ...
Dual-band double-negative-index fishnet metamaterial at millimeter-waves

Navarro-Cia, M.; García Meca, Carlos; Beruete, M.; Martínez Abietar, Alejandro José; Sorolla, M. (Optical Society of America, 2011)

[EN] An effective negative refractive index (NRI) is demonstrated and experimentally verified for the first two propagation bands of a fishnet-like metamaterial at millimeter-wave frequencies. The dual-band NRI behavior ...
Dynamically tunable transformation thermodynamics

García Meca, Carlos; Barceló, Carlos (IOP Publishing, 2016-04)

Recently, the introduction of transformation thermodynamics has provided a way to design thermal media that alter the flow of heat according to any spatial deformation, enabling the construction of novel devices such as ...
Elastic waves in phononic monolayer granular membranes

Tournat, Vincent; Pérez Arjona, Isabel; Merkel, Aurelien; Sánchez Morcillo, Víctor José; Gusev, Vitalyi (IOP Publishing: Open Access Journals, 2011)

The vibrational properties of out-of-plane elastic waves in hexagonal monolayer granular membranes were studied theoretically. The predicted propagation modes involve an out-of-plane displacement and two rotations with ...
Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview

Krushynska, Anastasiia O.; Torrent, Daniel; Aragón, Alejandro M.; Ardito, Raffaele; Bilal, Osama R.; Bonello, Bernard; Bosia, Federico; Chen, Yi; Christensen, Johan; Colombi, Andrea; Cummer, Steven A.; Djafari-Rouhani, Bahram; Fraternali, Fernando; Galich, Pavel I.; García, Pedro David; Groby, Jean-Philippe; Jimenez, Noe; Picó Vila, Rubén (Walter de Gruyter GmbH, 2023-02-23)

[EN] This broad review summarizes recent advances and "hot " research topics in nanophononics and elastic, acoustic, and mechanical metamaterials based on results presented by the authors at the EUROMECH 610 Colloquium ...