Title :
Shear-wave transducer using ferroelectric medium with distributed polarisation
Author_Institution :
Tohoku University, Research Institute of Electrical Communication, Sendai, Japan
Abstract :
A new type of transducer has been obtained for exciting only tangential displacement of a wave using an interdigital transducer. The device utilises a ferroelectric medium with a distributed polarisation caused by interdigital electrodes. An exciting interdigital electrode is located at the optimum position with respect to the polarisation pattern. Experimental results obtained with one such transducer are presented.
Keywords :
polarisation; surface acoustic wave devices; ultrasonic transducers; distributed polarisation; ferroelectric medium; interdigital transducer; shear wave transducer; tangential displacement;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810668
