Airborne ultrasonic vortex generation using flexible ferroelectrets

Ealo, Joao L. and Prieto, Jose Carlos and Seco Granja, Fernando (2011). Airborne ultrasonic vortex generation using flexible ferroelectrets. "Ieee Transactions on Ultrasonics, Ferroelectrics, And Frequency Control", v. 58 (n. 8); pp. 1651-1657. ISSN 0885-3010. https://doi.org/10.1109/TUFFC.2011.1992.

Description

Title: Airborne ultrasonic vortex generation using flexible ferroelectrets
Author/s:
  • Ealo, Joao L.
  • Prieto, Jose Carlos
  • Seco Granja, Fernando
Item Type: Article
Título de Revista/Publicación: Ieee Transactions on Ultrasonics, Ferroelectrics, And Frequency Control
Date: 2011
ISSN: 0885-3010
Volume: 58
Subjects:
Faculty: Centro de Automática y Robótica (CAR) UPM-CSIC
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Cellular ferroelectrets exhibit interesting electromechanical- acoustical characteristics. Their recent appearance and remarkable properties open up new possibilities for the design and development of ultrasonic transducers. In particular, the feasibility of fabricating ultrasonic vortex generators using ferroelectret films is demonstrated in this work. To this end, a transducer prototype was built by gluing the material onto a tangential-helical surface (outer diameter: 40 mm, pitch: 3.45 mm). Experimental results agree well with the theoretical estimation of the pressure and phase of the acoustic field in the near field and far field, which corroborates the potential of ferroelectrets to customize special acoustic fields. Furthermore, the proposed fabrication procedure is inexpensive and represents a new alternative for exploring and analyzing the special characteristics of acoustical helical wavefronts

More information

Item ID: 13715
DC Identifier: http://oa.upm.es/13715/
OAI Identifier: oai:oa.upm.es:13715
DOI: 10.1109/TUFFC.2011.1992
Official URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5995222
Deposited by: Memoria Investigacion
Deposited on: 20 Nov 2012 08:58
Last Modified: 21 Apr 2016 13:03
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