It’s a match! Tutorial práctico para la creación de capas de adaptación para transductores terapéuticos

Abstract

Acoustic impedance matching layers are a key element in the design of efficient ultrasonic transducers, since they facilitate the energy generated during mechanotransduction to be transmitted to the outside of the actuator. In general, active materials have a much higher acoustic impedance than the external medium, as in the case of piezoelectric ceramics used in biomedical ultrasound applications. To provide efficient energy transmission and improve the electroacoustic performance of the system, impedance matching layers, such as quarter-wavelength layers, are commonly employed. However, even though the fundamentals are well known, the literature is vague on the practical aspects of their design and fabrication. In this work we explain in detail a method for the design and fabrication of these layers for power ultrasonic emitters, paying special attention to the different resins and dopings used, as well as on their characterization, to obtain the desired match.

@inproceedings{RodriguezGarciaTEC2024,
 author = {Juan José Rodríguez-García and Josep Rodriguez-Sendra and José L. Alonso-Ramos and Noé Jiménez and Alejandro Cebrecos and Francisco Camarena},
 booktitle = {Tecniacústica 2024: 55º Congreso Español de Acústica. XIII Congreso Ibérico de Acústica. Faro, Portugal. 11-13 September},
 doi = {http://www.spacustica.pt/acustica2024/pdf/livro_comunicacoes_v5.pdf},
 editor = {Conference proceedings},
 month = {09},
 organization = {Sociedade Portuguesa de Acústica},
 pages = {625-636},
 series = {Oral},
 title = {It’s a match! Tutorial práctico para la creación de capas de adaptación para transductores terapéuticos},
 url = {http://www.spacustica.pt/acustica2024/pdf/livro_comunicacoes_v5.pdf},
 year = {2024}
}