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Listar por palabra clave "Focusing"

RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia

Listar por palabra clave "Focusing"

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    Análisis de la eficiencia de lentes de Fresnel acústicas 
    Pérez López, Sergio (Universitat Politècnica de València, 2019-08-01)
    [ES] En este trabajo se ha realizado un estudio teórico de la eficiencia de transmisión de lentes de Fresnel. Los resultados muestran que la distribución de las regiones transparentes y opacas de la lente no influye cuando ...
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    Arrangement of Type IV Collagen on NH2 and COOH Functionalized Surfaces 
    Miranda Coelho, Nuno; González García, Cristina; Salmerón Sánchez, Manuel; Altankov, George (Wiley-Blackwell, 2011-07)
    Apart from the paradigm that cell-biomaterials interaction depends on the adsorption of soluble adhesive proteins we anticipate that upon distinct conditions also other, less soluble ECM proteins such as collagens, associate ...
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    Design of Binary-Sequence Zone Plates in High Wavelength Domains 
    Fuster Escuder, José Miguel; Pérez-López, Sergio; Candelas Valiente, Pilar; Rubio Michavila, Constanza (MDPI AG, 2018)
    [EN] The design of zone plates is an important topic in many areas of physics, such as optics, X-rays, microwaves or ultrasonics. In this paper, a zone plate design method, which provides high flexibility in the shaping ...
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    Focalización del sonido mediante estructuras periódicas tridimensionales 
    Lonni, Aurelien (Universitat Politècnica de València, 2011-12-23)
    En un medio continuo e isótropo, una onda acústica se propaga de manera omnidireccional. Sin embargo, para algunas aplicaciones, puede ser útil restringir la difusión de una señal sonora dentro de un espacio finito. Los ...
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    Nonlinear focusing of ultrasonic waves by an axisymmetric diffraction grating embedded in water 
    Jimenez, Noe; Romero García, Vicente; Picó Vila, Rubén; García-Raffi, L. M.; Staliünas, Kestutis (American Institute of Physics (AIP), 2015-11-16)
    We report the nonlinear focusing of ultrasonic waves by an axisymmetric diffraction grating immersed in water. In the linear regime, the system presents high focal gain (32 dB), with a narrow beam-width and intense side ...
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    Transmission, reflection and absorption in Sonic and Phononic Crystals 
    Cebrecos Ruiz, Alejandro (Universitat Politècnica de València, 2015-10-26)
    [EN] Phononic crystals are artificial materials formed by a periodic arrangement of inclusions embedded into a host medium, where each of them can be solid or fluid. By controlling the geometry and the impedance contrast ...
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    Wave focusing using symmetry matching in axisymmetric acoustic gradient index lenses 
    Romero García, Vicente; Cebrecos Ruiz, Alejandro; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M.; Sánchez Pérez, Juan Vicente (American Institute of Physics (AIP), 2013-12-23)
    The symmetry matching between the source and the lens results in fundamental interest for lensing applications. In this work, we have modeled an axisymmetric gradient index (GRIN) lens made of rigid toroidal scatterers ...