Sound velocity measurements in thin films

A. Moreau*, S. Adenwalla, John B Ketterson

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

8 Scopus citations


The authors have developed a novel technique for measuring the phase velocity of elastic waves in self-supporting thin films. One edge of the film is fixed to an interdigital transducer (IDT) acting as a transmitter, while another IDT, the receiver, moves freely above the film. The coupling between the receiver and the film is made through a liquid bond. This allows a continuous variation of the path length, and the resulting change in phase and amplitude of the received continuous-wave (CW) signal permits a simultaneous and accurate measurement of the phase velocities of the different vibrational modes present in the foil.

Original languageEnglish (US)
Pages (from-to)315-318
Number of pages4
JournalUltrasonics Symposium Proceedings
StatePublished - Oct 1 1988
EventIEEE 1988 Ultrasonics Symposium - Proceedings - Chicago, IL, USA
Duration: Oct 2 1988Oct 5 1988

ASJC Scopus subject areas

  • Engineering(all)


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