Determination of elastic constants of thin films from phase velocity dispersion of different surface acoustic wave modes

1995 ◽  
Vol 78 (8) ◽  
pp. 5028-5034 ◽  
Author(s):  
S. Makarov ◽  
E. Chilla ◽  
H.‐J. Fröhlich
Keyword(s):  
Thin Films ◽  
Acoustic Wave ◽  
Phase Velocity ◽  
Surface Acoustic Wave ◽  
Elastic Constants ◽  
Velocity Dispersion ◽  
Phase Velocity Dispersion ◽  
Wave Modes

New techniques for the determination of surface wave phase velocities

1968 ◽  
Vol 58 (3) ◽  
pp. 1021-1034 ◽  
Author(s):  
S. Bloch ◽  
A. L. Hales
Keyword(s):  
Phase Velocity ◽  
Rayleigh Waves ◽  
World Wide ◽  
Velocity Dispersion ◽  
Cross Product ◽  
New Techniques ◽  
Phase Velocities ◽  
Phase Velocity Dispersion ◽  
The World

abstract A number of new techniques have been developed for the determination of phase velocities from the digitized seismograms from pairs of stations. One of these techniques is to Fourier analyze the sum (or difference) of the two seismograms after time shifting in steps to correspond to steps in phase velocity. The amplitude of the summed seismogram is a maximum for any particular period when both seismograms are in phase at that period. Another method is to pass both seismograms through a narrow bandpass digital filter centered at various periods and form the cross product of the filtered seismograms, after time shifting. The average of the resultant time series is a maximum when the two signals are in phase. The computer output is a matrix consisting of amplitudes or averages as a function of phase velocity and period. The phase velocity dispersion is determined from the contoured matrix. Using these techniques, interstation phase velocities of Rayleigh waves have been determined for the “World Wide Network Standard Stations” at Pretoria, Bulawayo and Windhoek. The method using cross-products is the most efficient.

scholarly journals Brillouin scattering determination of the surface acoustic wave velocity in InxGa1−xN: A probe into the elastic constants

2012 ◽  
Vol 101 (6) ◽  
pp. 062103 ◽  
Author(s):  
R. J. Jiménez-Riobóo ◽  
R. Cuscó ◽  
R. Oliva ◽  
N. Domènech-Amador ◽  
C. Prieto ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Velocity ◽  
Elastic Constants ◽  
Brillouin Scattering ◽  
Acoustic Wave Velocity

Simulation of Characteristics of ZnO/Diamond/Si Surface Acoustic Wave

2013 ◽  
Vol 389 ◽  
pp. 62-66
Author(s):  
Zhen Kai Zhou ◽  
Jie Feng
Keyword(s):  
Acoustic Wave ◽  
Phase Velocity ◽  
Surface Acoustic Wave ◽  
High Performance ◽  
Electromechanical Coupling ◽  
Wave Structure ◽  
Coupling Coefficients ◽  
Calculation Results ◽  
Acoustic Wave Device

Based on the recursive stiffness matrix method, the effective surface permittitivity model of multilayered Surface Acoustic Wave structure was established. By this model the phase velocity dispersive of ZnO/Si layered structure was calculated. The calculation results is in agreement with the experimental results ,which verifies effectiveness and accuracy of the model. Furthermore, the model was also carried out for the determination of the phase velocity and electromechanical coupling coefficients of ZnO/Diamond/Si structure. The best combination of high velocity and high coupling coefficient of the structure was obtained, which provided a good reference for the design of the high performance and high capability Surface Acoustic Wave device.

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