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Velocity measurement of multiple leaky waves on germanium by line-focus-beam acoustic microscope using FFT

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3 Author(s)
Kushibiki, J. ; Tohoku University, Department of Electrical Engineering, Faculty of Engineering, Sendai, Japan ; Horii, K. ; Chubachi, N.

V(z) curves obtained by the acoustic line-focus beam are deformed due to multiple leaky waves. A novel velocity measurement method with FFT is developed for a V(z) curve analysis. Experiments are performed for a (111)-Ge sample and two mode spectra are separately measured corresponding to two velocities for a leaky SAW and a leaky pseudo-SAW existing on the boundary of water/sample.

Published in:

Electronics Letters  (Volume:19 ,  Issue: 11 )