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Listar por autor "Díaz Rubio, Ana"

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Caracterización de xerogel para su uso en dispositivos fotónicos

Arthous García, Rafael (Universitat Politècnica de València, 2023-09-14)

[ES] En numerosas aplicaciones nanofotónicas se buscan emplear materiales ligeros y porosos para poder implementarlos a nivel industrial y obtener materiales los cuales puedes controlar su porosidad y estructura. Esto ...
Coherently Time-Varying Metasurfaces

Mostafa, M.H.; Diaz Rubio, Ana; Mirmoosa, M.S.; Tretyakov, S.A. (American Physical Society, 2022-06-24)

[EN] Known coherent metasurfaces control the interference of waves of a given frequency with other coherent waves at the same frequency, either illuminating from a different direction or created as intermodulation products. ...
Control of electromagnetic energy by metamaterials

Díaz Rubio, Ana (Universitat Politècnica de València, 2015-09-01)

[EN] Metamaterials are periodic structures whose unit cells are small compared to the wavelength at the operating frequency. Under these conditions, these artificial materials can be considered as homogeneous media whose ...
Control of the electric response of dielectric nano-bars to create versatile reconfigurable metasurfaces.

Máñez Espina, Luis Manuel (Universitat Politècnica de València, 2022-10-14)

[ES] El objetivo del trabajo fin de máster es el análisis y diseño de metasuperficies reconfigurables a frecuencias de infrarrojo con materiales de cambio de fase. En particular, el trabajo se centrará en metasuperficies ...
Desarrollo de metasuperficies dieléctricas para aplicaciones de baja observabilidad compatibles con la fabricación aditiva

Chen, Yilong (Universitat Politècnica de València, 2024-09-26)

[ES] Con el objetivo de reducir difracción y controlar la observabilidad radar en el régimen de microondas, este trabajo estudia metasuperficies totalmente dieléctricas que controlan la absorción en el régimen de microondas. ...
Directive excitation of guided electromagnetic waves through polarization control

Carbonell Olivares, Jorge; Rodríguez Fortuño, Francisco José; Díaz Rubio, Ana; Martínez Abietar, Alejandro José; Cervera Moreno, Francisco Salvador; Sánchez-Dehesa Moreno-Cid, José (American Physical Society, 2014-04)

Experimental evidence is reported on the control of the directionality of guided electromagnetic microwaves by the polarization of the exciting wave. Experiments are conducted using a two-dimensional waveguide made of ...
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 reflectores anómalos en el infrarrojo

Casino Colom, Silvia (Universitat Politècnica de València, 2023-07-26)

[ES] En los últimos años las metasuperficies están siendo un notable campo de investigación, por su capacidad de manipular las ondas electromagnéticas en todo el espectro. Entre la diversidad de propiedades que se pueden ...
Experimental verification of total absorption by a low-loss thin dielectric layer

Díaz Rubio, Ana; Hibbins, A.P.; Carbonell Olivares, Jorge; Sánchez-Dehesa Moreno-Cid, José (American Institute of Physics (AIP), 2015-06-15)

This work presents an experimental demonstration of total absorption by a metal-dielectric metasurface. Following a theoretical proposal [Dıaz-Rubio et al., Phys. Rev. B 89, 245123 (2014)], we have designed and ...
Extraordinary absorption by a thin dielectric slab backed with a metasurface

Díaz Rubio, Ana; Torrent Martí, Daniel; Carbonell Olivares, Jorge; Sánchez-Dehesa Moreno-Cid, José (American Physical Society, 2014-06)

The absorption of electromagnetic waves by a thin dielectric slab backed by a metasurface has been comprehensively studied and discussed at microwave frequencies. The metasurface consists of a metallic plate decorated with ...
Extreme Nonreciprocity in Metasurfaces Based on Bound States in the Continuum

Máñez-Espina, Luis Manuel; Faniayeu, Ihar; Asadchy, Viktar; Diaz Rubio, Ana (Wiley-VCH Verlag GmbH & Co. KGaA, 2024-01)

[EN] Nonreciprocal devices, including optical isolators, phase shifters, and amplifiers, are pivotal for advanced optical systems. However, exploiting natural materials is challenging due to their weak magneto-optical (MO) ...
In-plane omnidirectional magnetic field sensor based on Giant Magneto Impedance (GMI)

Díaz Rubio, Ana; García Miquel, Ángel Héctor; García Chocano, Víctor Manuel (Elsevier, 2017)

[EN] In this work the design and characterization of an omnidirectional in-plane magnetic field sensor are presented. The sensor is based on the Giant Magneto Impedance (GMI) effect in glass-coated amorphous microwires of ...
Low-Q whispering gallery modes in anisotropic metamterials shells

Díaz Rubio, Ana; Carbonell Olivares, Jorge; Torrent Martí, Daniel; Sánchez-Dehesa Moreno-Cid, José (American Physical Society, 2013-09)

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 ...
Multidisciplinary approach to cylindrical anisotropic metamaterials

Carbonell Olivares, Jorge; Torrent Martí, Daniel; Díaz Rubio, Ana; Sánchez-Dehesa Moreno-Cid, José (IOP Publishing: Open Access Journals, 2011)

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 ...
New Subwavelength Profile Monopole-Type Antenna

Yuan, Tangjie; Diaz Rubio, Ana; Ouslimani, Habiba Hafdallah (Institute of Electrical and Electronics Engineers, 2016-08)

[EN] In this paper, we present a new low-profile (lambda/40) compact antenna for the S-band frequency range (around 2.1 GHz). The main features are high efficiency (> 90%), vertical polarization, and omnidirectional ...
On the Integration of Reconfigurable Intelligent Surfaces in Real-World Environments: A Convenient Approach for Estimation Reflection and Transmission.

Diaz Rubio, Ana; Kosulnikov, Sergei; Tretyakov, Sergei (Institute of Electrical and Electronics Engineers, 2022-08)

[EN] The use of reconfigurable intelligent surfaces (RISs) foroptimization of propagation channels is one of the most promising and revolutionizing techniques for improving efficiency of the next generation of communications ...
On the origin of pure optical rotation in twisted-cross metamaterials

Barr, Lauren E.; Díaz Rubio, Ana; Tremain, Ben; Carbonell Olivares, Jorge; Sánchez-Dehesa Moreno-Cid, José; Hendry, Euan; Hibbins, Alastair P. (Nature Publishing Group, 2016-07-26)

We present an experimental and computational study of the response of twisted-cross metamaterials that provide near dispersionless optical rotation across a broad band of frequencies from 19 GHz to 37 GHz. We compare two ...
Perfect control of reflection and refraction using spatially dispersive metasurfaces

Asadchy, V.S.; Albooyeh, M.; Tcvetkova, S. N.; Diaz Rubio, Ana; Ra'di, Y.; Tretyakov, S.A. (American Physical Society, 2016-08-19)

[EN] Nonuniform metasurfaces (electrically thin composite layers) can be used for shaping refracted and reflected electromagnetic waves. However, known design approaches based on the generalized refraction and reflection ...
Radial Photonic Crystal for detection of frequency and position of radiation sources

Carbonell Olivares, Jorge; Díaz Rubio, Ana; Torrent Martí, Daniel; Cervera Moreno, Francisco Salvador; Kirleis, M. A.; Pique, A.; Sánchez-Dehesa Moreno-Cid, José (Nature Publishing Group, 2012-08-06)

Based on the concepts of artificially microstructured materials, i.e. metamaterials, we present here the first practical realization of a radial wave crystal. This type of device was introduced as a theoretical proposal ...
Radial Photonic Crystals as frequency and position sensors

Díaz Rubio, Ana (Universitat Politècnica de València, 2013-02-19)

[ES] En este trabajo se analizarán las propiedades de las estructuras conocidas como Cristales Fotónicos Radiales y sus posibles aplicaciones como sensores de frecuencia y posición. Las propiedades de estos dispositivos ...