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Listar por palabra clave "Ultrasonic lens"

RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia

Listar por palabra clave "Ultrasonic lens"

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    An Ultrasonic Lens Design Based on Prefractal Structures 
    Castiñeira Ibáñez, Sergio; TARRAZÓ SERRANO, DANIEL; Rubio Michavila, Constanza; Candelas Valiente, Pilar; Uris Martínez, Antonio (MDPI, 2016-04)
    The improvement in focusing capabilities of a set of annular scatterers arranged in a fractal geometry is theoretically quantified in this work by means of the finite element method (FEM). Two different arrangements of ...
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    Cylindrical 3D printed confgurable ultrasonic lens for subwavelength focusing enhancement 
    Castiñeira Ibáñez, Sergio; Tarrazó-Serrano, Daniel; Uris Martínez, Antonio; Rubio Michavila, Constanza; Minin, Oleg V.; Minin, Igor V. (Nature Publishing Group, 2020-12-15)
    [EN] In this study, we report the characteristics of acoustic jets obtained through a mesoscale (radius less than 5 wavelengths) ABS cylinder made with a 3D printer. We have analyzed the influence of cylinder size on the ...
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    Design of Acoustical Bessel-Like Beam Formation by a Pupil Masked Soret Zone Plate Lens 
    Tarrazó-Serrano, Daniel; Castiñeira Ibáñez, Sergio; Minin, Oleg V.; Candelas Valiente, Pilar; Rubio Michavila, Constanza; Minin, Igor V. (MDPI AG, 2019)
    [EN] The image performance of acoustic and ultrasound sensors depends on several fundamental parameters such as depth of focus or lateral resolution. There are currently two different types of acoustic diffractive lenses: ...
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    Directional Ultrasound Source for Solid Materials Inspection: Diffraction Management in a Metallic Phononic Crystal 
    Selim, Hossam; Picó Vila, Rubén; Trull, Jose; Delgado Prieto, Miguel; Cojocaru, Crina (MDPI AG, 2020-11)
    [EN] In this work, we numerically investigate the diffraction management of longitudinal elastic waves propagating in a two-dimensional metallic phononic crystal. We demonstrate that this structure acts as an "ultrasonic ...
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    Tunable depth of focus of acoustical pupil masked Soret Zone Plate 
    Castiñeira Ibáñez, Sergio; Tarrazó-Serrano, Daniel; Minin, Oleg V.; Rubio Michavila, Constanza; Minin, Igor V. (Elsevier, 2019)
    [EN] In acoustical lenses both resolution and depth of focus are determined by diffraction and the smaller the lens aperture the worse the resolution and the greater the depth of focus. Diffraction-limited resolution has ...
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    Ultrasonic Lens Based on a Subwavelength Slit Surrounded by Grooves 
    Gómez Lozano, Vicente; Candelas Valiente, Pilar; Belmar Ibáñez, Francisco; Rubio Michavila, Constanza; Uris Martínez, Antonio (MDPI, 2014-05)
    The lensing capabilities of a single subwavelength slit surrounded by a finite array of grooves milled into a brass plate is presented. The modulation of the beam intensity of this ultrasonic lens can be adjusted by varying ...