Non-Planar Pad-Printed Thick-Film Focused High-Frequency Ultrasonic Transducers for Imaging and Therapeutic Applications
| Autor: | Wanda W. Wolny, Ronald H. Silverman, Marc Lethiecq, Rasmus Lou-Moeller, Erwan Filoux, Franck Levassort, L.P. Tran-Huu-Hue, Jeffrey A. Ketterling |
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| Přispěvatelé: | GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) ( GREMAN - UMR 7347 ), Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire ( INSA CVL ), Institut National des Sciences Appliquées ( INSA ) -Institut National des Sciences Appliquées ( INSA ) -Centre National de la Recherche Scientifique ( CNRS ), GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) (GREMAN - UMR 7347), Université de Tours-Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2012 |
| Předmět: |
Ceramics
Materials science Acoustics and Ultrasonics Acoustics Transducers 02 engineering and technology Eye 01 natural sciences Article Imaging Planar Capacitive micromachined ultrasonic transducers Image resolution [ SPI.NRJ ] Engineering Sciences [physics]/Electric power Machining 0103 physical sciences Animals Computer Simulation Ceramic [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics Electrical and Electronic Engineering Porosity Electrodes 010301 acoustics Instrumentation ComputingMilieux_MISCELLANEOUS [ PHYS.MECA.ACOU ] Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Ultrasonography Titanium Substrates Hydrophone Phantoms Imaging [SPI.NRJ]Engineering Sciences [physics]/Electric power 021001 nanoscience & nanotechnology [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] Transducer Lead Electrical engineering visual_art visual_art.visual_art_medium Diagnostic imaging [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics Ultrasonic sensor Rabbits Zirconium [No keyword] 0210 nano-technology |
| Zdroj: | IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2012, 59 (9), pp.1976-1982. 〈10.1109/TUFFC.2012.2416〉 IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, Institute of Electrical and Electronics Engineers, 2012, 59 (9), pp.1976-1982. ⟨10.1109/TUFFC.2012.2416⟩ |
| ISSN: | 1525-8955 0885-3010 |
| DOI: | 10.1109/tuffc.2012.2416 |
| Popis: | International audience; Pad-printed thick-film transducers have been shown to be an interesting alternative to lapped bulk piezoceramics, because the film is deposited with the required thickness, size, and geometry, thus avoiding any subsequent machining to achieve geometrical focusing. Their electromechanical properties are close to those of bulk ceramics with similar composition despite having a higher porosity. In this paper, pad-printed high-frequency transducers based on a low-loss piezoceramic composition are designed and fabricated. High-porosity ceramic cylinders with a spherical top surface are used as the backing substrate. The transducers are characterized in view of imaging applications and their imaging capabilities are evaluated with phantoms containing spherical inclusions and in different biological tissues. In addition, the transducers are evaluated for their capability to produce high-acoustic intensities at frequencies around 20 MHz. High-intensity measurements, obtained with a calibrated hydrophone, show that transducer performance is promising for applications that would require the same device to be used for imaging and for therapy. Nevertheless, the transducer design can be improved, and simulation studies are performed to find a better compromise between low-power and high-power performance. The size, geometry, and constitutive materials of optimized configurations are proposed and their feasibility is discussed. |
| Databáze: | OpenAIRE |
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