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Browsing by Author "Jiménez González, Noé"

Now showing items 1-20 of 81

A new elastographic technique using acoustic vortices

Jimenez, Noe; Benlloch Baviera, Jose María; Camarena Femenia, Francisco (IEEE, 2020-09-11)

[EN] We present a novel method of elastography based on acoustic vortices to transfer angular momentum to tissue in addition to linear momentum. Focused vortex beams can push and twist tissue, and the rotation direction ...
Acoustic Bessel-like beam formation by an axisymmetric grating

Jimenez, Noe; Romero García, Vicente; Picó Vila, Rubén; Cebrecos Ruiz, Alejandro; Sánchez Morcillo, Víctor José; García-Raffi, L. M.; Sánchez Pérez, Juan Vicente; Staliünas, Kestutis (European Physical Society, 2014-04)

We report Bessel-like beam formation of acoustic waves by means of an axisymmetric grating of rigid tori. The results show that the generated beam pattern is similar to that of Bessel beams, characterized by elongated ...
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 ...
Asymmetric propagation using enhanced self-demodulation in a chirped phononic crystal

Cebrecos, Alejandro; Jimenez, Noe; Romero García, Vicente; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M. (AIP Publishing, 2016-12)

Asymmetric propagation of acoustic waves is theoretically reported in a chirped phononic crystal made of the combination of two different nonlinear solids. The dispersion of the system is spatially dependent and allows the ...
Beamforming for large-area scan and improved SNR in array-based photoacoustic microscopy

Cebrecos, Alejandro; García-Garrigós, J. J.; Descals, A.; Jimenez, Noe; Benlloch Baviera, Jose María; Camarena Femenia, Francisco (Elsevier, 2021)

[EN] Beamforming enhances the performance of array-based photoacoustic microscopy (PAM) systems for large-area scan. In this study, we quantify the imaging performance of a large field-of-view optical-resolution ...
Broadband quasi perfect absorption using chirped multi-layer porous materials

Jimenez, Noe; Romero García, Vicente; Cebrecos, Alejandro; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M. (AIP Publishing, 2016-12)

This work theoretically analyzes the sound absorption properties of a chirped multi-layer porous material including transmission, in particular showing the broadband unidirectional absorption properties of the system. Using ...
Broadband reduction of the specular reflections by using sonic crystals: A proof of concept for noise mitigation in aerospace applications

García-Raffi, L. M.; Salmerón-Contreras, L.J.; Herrero-Durá, Iván; Picó Vila, Rubén; Redondo, Javier; Sánchez Morcillo, Víctor José; Staliunas, Kestutis; Adkins, N.J.; Cebrecos, Alejandro; Jimenez, Noe; Romero García, Vicente (Elsevier, 2018-02)

[EN] The broadband reduction of the specular reflections by sonic crystals (SCs) is theoretically and experimentally reported in this work. The analysed system consists of a sound source radiating a SC made of acoustically ...
Calcium sulfate setting monitoring with ultrasonic backscattering analysis

Rodríguez-Sendra, Josep; Jimenez, Noe; Picó Vila, Rubén; Faus, Joan; Camarena Femenia, Francisco (Acoustical Society of America, 2019-09-06)

[Otros] Ultrasonic backscattering techniques are used to monitor the setting process of calcium sulfate. A 3.5 MHz frequency A-scan pulse-echo system is used to obtain the acoustic properties of a cylindrical sample of ...
Caracterización de un dispositivo elastográfico

Peña Maestre, María Rocío (Universitat Politècnica de València, 2014-01-27)

La elastografía es una técnica ultrasónica no invasiva basada en la ecografía, que permite obtener imágenes, denominadas elastogramas, de las propiedades elásticas de tejidos biológicos. Los tejidos blandos y normales se ...
Caracterización de un medio viscoelástico mediante un sistema mixto magnético-ultrasónico

Sánchez García, Juan Antonio (Universitat Politècnica de València, 2019-03-06)

[ES] En este TFM se estudiarán las propiedades mecánicas de materiales viscoelásticos a partir del análisis de la dinámica de una esfera rígida situada en interior del material. Para ello se utilizará y controlará un sistema ...
Caracterización del campo acústico generado por transductores focalizados

Adrián Martínez, Silvia; Jimenez, Noe; Camarena Femenia, Francisco; Sánchez Morcillo, Víctor José; Makov, Yu N. (Sociedad Española de Acústica (SEA), 2011)

[EN] The study of the acoustic field characteristics generated by focusing sources, both in linear and nonlinear regime, is an active field of research as they are relevant in most of the ultrasonic applications in medicine ...
Characterization of Viscoelastic Media Combining Ultrasound and Magnetic-Force Induced Vibrations on an Embedded Soft Magnetic Sphere

Cebrecos, Alejandro; Jimenez, Noe; Tarazona Tárrega, Rafael; Company, Miguel; Benlloch Baviera, Jose María; Camarena Femenia, Francisco (Institute of Electrical and Electronics Engineers, 2021-12)

[EN] We report a method to locally assess the complex shear modulus of a viscoelastic medium. The proposed approach is based on the application of a magnetic force to a millimeter-sized steel sphere embedded in the medium ...
Desarrollo de un sistema mixto magnético-ultrasónico para la caracterización de medios viscoelásticos

Company Arnalte, Miguel (Universitat Politècnica de València, 2018-04-16)

El presente TFM se enmarca en el área de caracterización de medios viscoelásticos para aplicaciones médicas, como la imagen elastográfica de tejidos biológicos, o aplicaciones industriales, como el control de calidad de ...
Design of acoustic metamaterials made of Helmholtz resonators for perfect absorption by using the complex frequency plane

Romero-García, V.; Jimenez, Noe; Theocharis, G.; Achilleos, V.; Merkel, A.; Richoux, O.; Tournat, V.; Groby, J-P; Pagneux, V. (Elsevier, 2020)

[Otros] Dans cette revue, nous présentons des résultats sur l'absorption acoustique parfaite sub-longueur d'onde faisant appel à des métamatériaux acoustiques avec des résonateurs Helmholtz pour différentes configurations. ...
Diseño y desarrollo de sistemas ultrasónicos para la detección y eliminación de obstrucciones en conductos de bombas de gasóleo

López Navarro, José Antonio (Universitat Politècnica de València, 2019-06-10)

[ES] El objetivo de este TFM es, por un lado, conseguir establecer un método óptimo para la detección de obstrucciones en el conducto de una bomba de inyección de gasóleo mediante un ensayo no destructivo, utilizando ...
Diseño y programación de una herramienta de predicción del campo acústico generado por array de subgraves

Camblor Iglesias, Pablo (Universitat Politècnica de València, 2013-02-13)

El objetivo principal del proyecto es desarrollar un software de predicción del campo acústico generado por un array de subgraves para eventos al aire libre. El programa presentará una interfaz gráfica intuitiva que ...
Dynamic beamforming for large area scan in array-based photoacoustic microscopy

Cebrecos, Alejandro; García-Garrigós, Juan J.; Descals, Andreu; Jimenez, Noe; Benlloch Baviera, Jose María; Camarena Femenia, Francisco (IEEE, 2020-09-11)

[EN] We explore the use of a beamforming method intended for large-area scanning in optical-resolution photoacoustic microscopy. It has been evaluated in a experimental setup that comprises a low-cost laser diode and a ...
Dynamic nonlinear focal shift in amplitude modulated moderately focused acoustic beams

Jimenez, Noe; Camarena Femenia, Francisco; González-Salido, Nuria (Elsevier, 2017-03)

[EN] The phenomenon of the displacement of the position of the pressure, intensity and acoustic radiation force maxima along the axis of focused acoustic beams under increasing driving amplitudes (nonlinear focal shift) ...
Efecto del método de definición de las propiedades acústicas de cráneo humano en la propagación focalizada de ultrasonidos

Jiménez-Gambín, Sergio; Jimenez, Noe; Camarena Femenia, Francisco (SOCIEDAD ESPAÑOLA DE ACUSTICA, 2019-07-16)

[EN] Combination of focused ultrasound and microbubbles is a non-ionizing technique for neurodegenerative diseases treatment allowing the blood-brain barrier opening locally, transiently, non-invasively and safely. In this ...
Efficiency of parametric ultrasound generation in relaxing media for very shallow-water echo sounders

Ordoñez-Cebrian, Patricia; Jimenez, Noe; Espinosa Roselló, Víctor; Puig Pons, Vicente; Soliveres, Ester (2014-04)

Parametric acoustic generation provides the possibility to obtain narrow and nearly side-lobe free acoustic beams for low frequencies. In this way, the nonlinear interaction of two intense beams with close frequencies ...