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Listar por palabra clave "Diffraction"

Mostrando ítems 1-20 de 36

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[Cr(phen)(ox)2]-: A versatile Bis-Oxalato Building for the Design of Heteropolymetallic System. Crystal Structures and Magnetic Properties of AsPh4[Cr(phen)(ox)2].H2O, [NaCr(phen)(ox)2(H2O)].H2O abd {[Cr(phen)(ox)2]2[Mn2(bipy)2(H2O)2(ox)]}.6H2O

Marinescu, G.; Andruh, M.; Lescouëzec, R.; Muñoz Roca, María Del Carmen; Cano, J.; Lloret, F.; Julve, M. (The Royal Society of Chemistry, 2000-07)

[EN] The new complexes of formula AsPh4[Cr(phen)(ox)(2)] . H2O (1), [NaCr(phen)(ox)(2)(H2O)] . 2H(2)O (2) and {[Cr(phen)(ox)(2)](2)[Mn-2(bpy)(2)(H2O)(2)(ox)]} . 6H(2)O (3) (AsPh4 = tetraphenylarsonium cation; phen = ...
Accurate Beam Profile Characterization in THz Transmission Imaging Systems

Báez-Chorro, Miguel Ángel; Usó-Izquierdo, Manel; Vidal Rodriguez, Borja (Institute of Electrical and Electronics Engineers, 2021-09)

[EN] Beam profiling in terahertz systems based on a 4f configuration is revised to show that usual practices underestimate the beam waist due to the narrow point spread function of the detection arm. A rigorous assessment ...
Acoustic wave diffraction at the upper edge of a two-dimensional periodic array of finite rigid cylinders. A comprehensive design model of periodicity-based devices

Castiñeira Ibáñez, Sergio; Rubio Michavila, Constanza; Sánchez Pérez, Juan Vicente (European Physical Society, 2013)

[EN] Diffraction at the upper edge of a two-dimensional periodic array of finite rigid cylinders immersed in air as well as the effect on its wave propagation properties are numerically and experimentally reported in this ...
Aperiodic Diffract: Estudio de redes difractivas

Ferrando Martín, Vicente; Calatayud Calatayud, Arnau; Remón Martín, Laura; Monsoriu Serra, Juan Antonio; Pons-Martí, Amparo; Furlan, Walter D. (Universitat Politècnica de València, 2014-03-31)

[EN] In this work we introduce a virtual laboratory, APERIODIC DIFFRACT, developed in Matlab GUI (Graphical User Interface) as an informatics tool for teaching the diffractive properties of aperiodic gratings. This GUI ...
Bifocal Fibonacci Diffractive Lenses

Monsoriu Serra, Juan Antonio; Calatayud Calatayud, Arnau; Remón Martín, Laura; Furlan, Walter Daniel; Saavedra, G.; Andrés Bou, Pedro (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2013-06)

The focusing properties of diffractive lenses designed using the Fibonacci sequence are studied. It is demonstrated that these lenses present two equal intensity foci and that the ratio of the two focal distances approaches ...
BIO bragg gratings on microfibers for label-free biosensing

Juste-Dolz, Augusto Miguel; Delgado-Pinar, Martina; Avella-Oliver, Miquel; Fernández-Sánchez, María Estrella; Pastor Abellán, Daniel; Andrés, Miguel V.; Maquieira Catala, Ángel (Elsevier, 2021-03-15)

[EN] Discovering nanoscale phenomena to sense biorecognition events introduces new perspectives to exploit nano science and nanotechnology for bioanalytical purposes. Here we present Bio Bragg Gratings (BBGs), a novel ...
Biogratings: Diffractive Transducers for Biosensing in Photonic Platforms

Juste Dolz, Augusto Miguel (Universitat Politècnica de València, 2023-06-15)

[ES] El desarrollo científico y tecnológico de las últimas décadas ha dado lugar a sistemas sensores capaces de obtener, procesar y transmitir información sobre multitud de aspectos físicos y químicos, y utilizarla para ...
Denaturing for Nanoarchitectonics: Local and Periodic UV-Laser Photodeactivation of Protein Biolayers to Create Functional Patterns for Biosensing

Juste-Dolz, Augusto Miguel; Delgado-Pinar, Martina; Avella-Oliver, Miquel; Fernández-Sánchez, María Estrella; Cruz, José Luis; Andrés, Miguel V.; Maquieira Catala, Angel (American Chemical Society, 2022-09-14)

[EN] The nanostructuration of biolayers has become a paradigm for exploiting nanoscopic light-matter phenomena for biosensing, among other biomedical purposes. In this work, we present a photopatterning method to create ...
Desarrollo de un sistema ultrasónico TOFD configurable

Moreno Sánchez, Benigno (Universitat Politècnica de València, 2014-11-28)

En el presente Trabajo Final de Grado, Desarrollo de un sistema TOFD configurable, se desarrolla un sistema para la aplicación de la técnica de Ensayos No Destructivos TOFD (Time of flight diffraction) o tiempo de ...
Dielectric-based Components and Methods for Terahertz Sensing

Colleoni, Margherita Patrizia Maria (Universitat Politècnica de València, 2020-09-02)

[ES] En el presente trabajo, se investigan algunos aspectos de la interacción de los materiales dieléctricos con ondas de THz. La banda de THz, que incluye las frecuencias de 100 GHz a 30 THz, ha despertado un gran interés ...
Diffraction by m-bonacci gratings

Monsoriu Serra, Juan Antonio; Giménez Valentín, Marcos Herminio; Furlan, Walter Daniel; Barreiro, Juan Carlos; Saavedra, Genaro (IOP Publishing, 2015-11)

We present a simple diffraction experiment with m-bonacci gratings as a new interesting generalization of the Fibonacci ones. Diffraction by these nonconventional structures is proposed as a motivational strategy to ...
Disk-based one-dimensional photonic crystal slabs for label-free immunosensing

Sancho-Fornes, Gabriel; Avella-Oliver, Miquel; Carrascosa Rubio, Javier; Fernández-Sánchez, María Estrella; Brun, Eva M.; Maquieira Catala, Ángel (Elsevier, 2019)

[EN] One-dimensional photonic crystal slabs are periodic optical nanostructures that produce guided-mode resonance. They couple part of the incident light into the waveguide generating bandgaps in the transmittance spectrum, ...
Enhancement of pupil-masked wavelength-scale gas-filled flat acoustic lens based on anomaly apodization effect

Rubio Michavila, Constanza; Tarrazó-Serrano, Daniel; Minin, Oleg V.; Uris Martínez, Antonio; Minin, Igor V. (Elsevier, 2019)

[EN] In this letter, the improvement in focus by the use of a pupil mask produced in an acoustic mesoscale cuboid particle ¿lled with CO2 is reported. Thereby, the result shows that the pupil mask increases the sound ...
Estudio del compuesto TaBO4 como posible sensor a alta presión

Blay Roger, José Rubén (Universitat Politècnica de València, 2021-01-12)

[ES] La búsqueda de nuevos compuestos químicos con propiedades específicas representa uno de los retos más significativos, no sólo para la industria químico-farmacéutica, sino para el mundo científico en general. Los ...
Fabrication of ultrafine and nanocrystalline WC-Co mixtures by high energy milling

Bonache Bezares, Victoria; Salvador Moya, Mª Dolores; Busquets Mataix, David Jerónimo; Segovia-López, Francisco (MANEY PUBLISHING, 2009)

[EN] In this work ultrafine and nanocrystalline WC-Co mixtures were obtained by low energy milling in planetary ball mill. The effect of the processing conditions on the reduction and distribution of the grain sizes and ...
Fractal square zone plates

Calatayud Calatayud, Arnau; Ferrando Martín, Vicente; Gimenez Palomares, Fernando; Furlan, Walter Daniel; Saavedra, G.; Monsoriu Serra, Juan Antonio (Elsevier, 2013-01-01)

[EN] In this paper we present a novel family of zone plates with a fractal distribution of square zones. The focusing properties of these fractal diffractive lenses coined fractal square zone plates are analytically studied ...
High-pressure structural phase transition in MnWO4

Ruiz-Fuertes, Javier; Friedrich, A.; Gomis, O.; Errandonea, Daniel; Morgenroth, W.; Sans Tresserras, Juan Ángel; Santamaria-Perez, David (American Physical Society, 2015-03-30)

The pressure-induced phase transition of the multiferroic manganese tungstate MnWO4 is studied on single crystals using synchrotron x-ray diffraction and Raman spectroscopy. We observe the monoclinic P2/c to triclinic P ...
High-pressure theoretical and experimental study of HgWO4

Lopez-Solano, J.; Rodriguez-Hernandez, Plácida; Muñoz, A.; Santamaria-Perez, David; Manjón Herrera, Francisco Javier; Ray, S.; Gomis Hilario, Oscar; Mollar García, Miguel Alfonso; Panchal, V.; Errandonea, Daniel (Taylor & Francis, 2011-03)

HgWO 4 at ambient pressure is characterized using a combination of ab initio calculations, X-ray diffraction and Raman scattering measurements. The effect of low pressure and temperature on the structural stability is ...
Human Body Scattering Effects at Millimeter Waves Frequencies for Future 5G Systems and Beyond

Romero Peña, Johan Samuel (Universitat Politècnica de València, 2023-01-13)

[ES] Se espera que las futuras comunicaciones móviles experimenten una revolución técnica que vaya más allá de las velocidades de datos de Gbps y reduzca las latencias de las velocidades de datos a niveles muy cercanos al ...
Imaging Properties of Kinoform Fibonacci Lenses

Ferrando Martín, Vicente; Calatayud Calatayud, Arnau; Andrés, P.; Torroba, Roberto; Furlan, Walter Daniel; Monsoriu Serra, Juan Antonio (Institute of Electrical and Electronics Engineers (IEEE): OAJ, 2014-02)

In this paper, we present a new kind of bifocal kinoform lenses in which the phase distribution is based on the Fibonacci sequence. The focusing properties of these DOEs coined Kinoform Fibonacci lenses (KFLs) are ...