A theoretical analysis of a piezoelectric ultrasound device with an active matching layer

A. Mulholland, S.N. Ramadas, R.L. O'Leary, A.C.S. Parr, A. Troge, G. Hayward, R.A. Pethrick

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This paper investigates the use of magnetically active materials in the matching layer of a piezoelectric transducer. This then allows the performance of the device to be dynamically altered by applying an external field. The effect that this new matching layer has on the performance of a typical device is theoretically investigated here. It transpires that the additional flexibility of an active matching layer can be used to maintain the efficiency of the device as the external load is varied.
Original languageEnglish
Pages (from-to)102-110
Number of pages8
Issue number1
Early online date24 Aug 2007
Publication statusPublished - 31 Dec 2007


  • magnetorheological
  • ultrasonic transducer
  • matching layer
  • modelling

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