Sound velocity measurements in thin films

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Proceedings titleProceedings of the 1988 Ultrasonics Symposium
Conference1988 Ultrasonics Symposium, October 2-5 1988, Chicago IL, USA
Pages315318; # of pages: 4
AbstractThe 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.
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NPARC number21273341
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Record identifier2e334e7b-2455-46d1-9b0f-ee8a5ce2969f
Record created2015-01-07
Record modified2016-05-09
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